diff --git a/types/office-js/index.d.ts b/types/office-js/index.d.ts
index 7668528b54..329179d5ca 100644
--- a/types/office-js/index.d.ts
+++ b/types/office-js/index.d.ts
@@ -6365,6 +6365,160 @@ declare namespace Office {
          */
         Subject
     }
+    /**
+     * The AppointmentForm namespace is used to access the currently selected appointment.
+     *
+     * [Api set: Mailbox 1.0]
+     *
+     * @remarks
+     * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>Restricted</td></tr>
+     *
+     * <tr><td>Applicable Outlook mode</td><td>Compose or read</td></tr></table>
+     */
+    interface AppointmentForm {
+        /**
+         * Gets an object that provides methods for manipulating the body of an item.
+         *
+         * [Api set: Mailbox 1.1]
+         *
+         * @remarks
+         *
+         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
+         *
+         * <tr><td>Applicable Outlook mode</td><td>Compose or read</td></tr></table>
+         */
+        body: string;
+        /**
+         * Gets or sets the date and time that the appointment is to end.
+         *
+         * The end property is expressed as a Coordinated Universal Time (UTC) date and time value. You can use the convertToLocalClientTime method to convert the end property value to the client's local date and time.
+         *
+         * *Read mode*
+         *
+         * The end property returns a Date object.
+         *
+         * *Compose mode*
+         *
+         * The end property returns a Time object.
+         *
+         * When you use the Time.setAsync method to set the end time, you should use the convertToUtcClientTime method to convert the local time on the client to UTC for the server.
+         *
+         * [Api set: Mailbox 1.0]
+         *
+         * @remarks
+         *
+         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
+         *
+         * <tr><td>Applicable Outlook mode</td><td>Compose or read</td></tr></table>
+         */
+        end: Date;
+        /**
+        * Gets or sets the location of an appointment.
+        *
+        * *Read mode*
+        *
+        * The location property returns a string that contains the location of the appointment.
+        *
+        * *Compose mode*
+        *
+        * The location property returns a Location object that provides methods that are used to get and set the location of the appointment.
+        *
+        * [Api set: Mailbox 1.0]
+        *
+        * @remarks
+        *
+        * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
+        * <tr><td>Applicable Outlook mode</td><td>Compose or read</td></tr></table>
+        */
+        location: string;
+        /**
+        * Provides access to the optional attendees of an event. The type of object and level of access depends on the mode of the current item.
+        *
+        * *Read mode*
+        *
+        * The optionalAttendees property returns an array that contains an EmailAddressDetails object for each optional attendee to the meeting.
+        *
+        * *Compose mode*
+        *
+        * The optionalAttendees property returns a Recipients object that provides methods to get or update the optional attendees for a meeting.
+        *
+        * [Api set: Mailbox 1.0]
+        *
+        * @remarks
+        *
+        * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
+        *
+        * <tr><td>Applicable Outlook mode</td><td>Compose or read</td></tr></table>
+        */
+       optionalAttendees: string[] | EmailAddressDetails[];
+       resources: string[];
+        /**
+         * Provides access to the required attendees of an event. The type of object and level of access depends on the mode of the current item.
+         *
+         * *Read mode*
+         *
+         * The requiredAttendees property returns an array that contains an EmailAddressDetails object for each required attendee to the meeting.
+         *
+         * *Compose mode*
+         *
+         * The requiredAttendees property returns a Recipients object that provides methods to get or update the required attendees for a meeting.
+         *
+         * [Api set: Mailbox 1.0]
+         *
+         * @remarks
+         *
+         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
+         *
+         * <tr><td>Applicable Outlook mode</td><td>Compose or read</td></tr></table>
+         */
+        requiredAttendees: string[] | EmailAddressDetails[];
+        /**
+         * Gets or sets the date and time that the appointment is to begin.
+         *
+         * The start property is expressed as a Coordinated Universal Time (UTC) date and time value. You can use the convertToLocalClientTime method to convert the value to the client's local date and time.
+         *
+         * *Read mode*
+         *
+         * The start property returns a Date object.
+         *
+         * *Compose mode*
+         *
+         * The start property returns a Time object.
+         *
+         * When you use the Time.setAsync method to set the start time, you should use the convertToUtcClientTime method to convert the local time on the client to UTC for the server.
+         *
+         * [Api set: Mailbox 1.0]
+         *
+         * @remarks
+         *
+         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
+         *
+         * <tr><td>Applicable Outlook mode</td><td>Compose or read</td></tr></table>
+         */
+        start: Date;
+        /**
+         * Gets or sets the description that appears in the subject field of an item.
+         *
+         * The subject property gets or sets the entire subject of the item, as sent by the email server.
+         *
+         * *Read mode*
+         *
+         * The subject property returns a string. Use the normalizedSubject property to get the subject minus any leading prefixes such as RE: and FW:.
+         *
+         * *Compose mode*
+         *
+         * The subject property returns a Subject object that provides methods to get and set the subject.
+         *
+         * [Api set: Mailbox 1.0]
+         *
+         * @remarks
+         *
+         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
+         *
+         * <tr><td>Applicable Outlook mode</td><td>Compose or read</td></tr></table>
+         */
+        subject: string;
+    }
     /**
      * Represents an attachment on an item from the server. Read mode only.
      *
@@ -7092,77 +7246,6 @@ declare namespace Office {
      * Important: This is an internal Outlook object, not directly exposed through existing interfaces. You should treat this as a mode of `Office.context.mailbox.item`. Refer to the Object Model pages for more information.
      */
     interface AppointmentCompose extends Appointment, ItemCompose {
-        /**
-         * Gets or sets the date and time that the appointment is to end.
-         *
-         * The end property is an {@link Office.Time} object expressed as a Coordinated Universal Time (UTC) date and time value. You can use the convertToLocalClientTime method to convert the end property value to the client's local date and time.
-         *
-         * When you use the Time.setAsync method to set the end time, you should use the convertToUtcClientTime method to convert the local time on the client to UTC for the server.
-         *
-         * [Api set: Mailbox 1.0]
-         *
-         * @remarks
-         *
-         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
-         *
-         * <tr><td>Applicable Outlook mode</td><td>Appointment Organizer</td></tr></table>
-         */
-        end: Time;
-        /**
-         * Gets or sets the {@link Office.Location} of an appointment. The location property returns a Location object that provides methods that are used to get and set the location of the appointment.
-         *
-         * [Api set: Mailbox 1.0]
-         *
-         * @remarks
-         *
-         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
-         *
-         * <tr><td>Applicable Outlook mode</td><td>Appointment Organizer</td></tr></table>
-         */
-        location: Location;
-        /**
-         * Provides access to the optional attendees of an event. The type of object and level of access depends on the mode of the current item. The optionalAttendees property returns an {@link Office.Recipients} object that provides methods to get or update the optional attendees for a meeting.
-         *
-         * [Api set: Mailbox 1.0]
-         *
-         * @remarks
-         *
-         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
-         *
-         * <tr><td>Applicable Outlook mode</td><td>Appointment Organizer</td></tr></table>
-         */
-        optionalAttendees: Recipients;
-        /**
-         * Provides access to the required attendees of an event. The type of object and level of access depends on the mode of the current item. The requiredAttendees property returns an {@link Office.Recipients} object that provides methods to get or update the required attendees for a meeting.
-         *
-         * [Api set: Mailbox 1.0]
-         *
-         * @remarks
-         *
-         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
-         *
-         * <tr><td>Applicable Outlook mode</td><td>Appointment Organizer</td></tr></table>
-         */
-        requiredAttendees: Recipients;
-        /**
-         * Gets or sets the date and time that the appointment is to begin.
-         *
-         * The start property is an {@link Office.Time} object expressed as a Coordinated Universal Time (UTC) date and time value. You can use the convertToLocalClientTime method to convert the value to the client's local date and time.
-         *
-         * When you use the Time.setAsync method to set the start time, you should use the convertToUtcClientTime method to convert the local time on the client to UTC for the server.
-         *
-         * [Api set: Mailbox 1.0]
-         *
-         * @remarks
-         *
-         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
-         *
-         * <tr><td>Applicable Outlook mode</td><td>Appointment Organizer</td></tr></table>
-         */
-        start: Time;
-
-        // Repeated Item fields //
-
          /**
          * Gets an object that provides methods for manipulating the body of an item.
          *
@@ -7201,6 +7284,22 @@ declare namespace Office {
          * Note: This member is not supported in Outlook for iOS or Outlook for Android.
          */
         dateTimeModifed: Date;
+        /**
+         * Gets or sets the date and time that the appointment is to end.
+         *
+         * The end property is an {@link Office.Time} object expressed as a Coordinated Universal Time (UTC) date and time value. You can use the convertToLocalClientTime method to convert the end property value to the client's local date and time.
+         *
+         * When you use the Time.setAsync method to set the end time, you should use the convertToUtcClientTime method to convert the local time on the client to UTC for the server.
+         *
+         * [Api set: Mailbox 1.0]
+         *
+         * @remarks
+         *
+         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
+         *
+         * <tr><td>Applicable Outlook mode</td><td>Appointment Organizer</td></tr></table>
+         */
+        end: Time;
         /**
          * Gets the type of item that an instance represents.
          *
@@ -7215,6 +7314,18 @@ declare namespace Office {
          * <tr><td>Applicable Outlook mode</td><td>Appointment Organizer</td></tr></table>
          */
         itemType: Office.MailboxEnums.ItemType;
+        /**
+         * Gets or sets the {@link Office.Location} of an appointment. The location property returns a Location object that provides methods that are used to get and set the location of the appointment.
+         *
+         * [Api set: Mailbox 1.0]
+         *
+         * @remarks
+         *
+         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
+         *
+         * <tr><td>Applicable Outlook mode</td><td>Appointment Organizer</td></tr></table>
+         */
+        location: Location;
         /**
          * Gets the notification messages for an item.
          *
@@ -7227,7 +7338,18 @@ declare namespace Office {
          * <tr><td>Applicable Outlook mode</td><td>Appointment Organizer</td></tr></table>
          */
         notificationMessages: NotificationMessages;
-
+        /**
+         * Provides access to the optional attendees of an event. The type of object and level of access depends on the mode of the current item. The optionalAttendees property returns an {@link Office.Recipients} object that provides methods to get or update the optional attendees for a meeting.
+         *
+         * [Api set: Mailbox 1.0]
+         *
+         * @remarks
+         *
+         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
+         *
+         * <tr><td>Applicable Outlook mode</td><td>Appointment Organizer</td></tr></table>
+         */
+        optionalAttendees: Recipients;
         /**
          * Gets or sets the recurrence pattern of an appointment.
          * 
@@ -7248,7 +7370,18 @@ declare namespace Office {
          * @beta
          */
         recurrence: Recurrence;
-
+        /**
+         * Provides access to the required attendees of an event. The type of object and level of access depends on the mode of the current item. The requiredAttendees property returns an {@link Office.Recipients} object that provides methods to get or update the required attendees for a meeting.
+         *
+         * [Api set: Mailbox 1.0]
+         *
+         * @remarks
+         *
+         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
+         *
+         * <tr><td>Applicable Outlook mode</td><td>Appointment Organizer</td></tr></table>
+         */
+        requiredAttendees: Recipients;
         /**
          * Gets the id of the series that an instance belongs to.
          * 
@@ -7269,124 +7402,23 @@ declare namespace Office {
          * @beta
          */
         seriesId: string;
-
         /**
-         * Adds an event handler for a supported event.
-         * 
-         * Currently the only supported event type is Office.EventType.RecurrencePatternChanged, which is invoked when the user changes the recurrence pattern of a series.
-         * 
-         * [Api set: Mailbox Preview]
+         * Gets or sets the date and time that the appointment is to begin.
          *
-         * @remarks
-         * 
-         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
+         * The start property is an {@link Office.Time} object expressed as a Coordinated Universal Time (UTC) date and time value. You can use the convertToLocalClientTime method to convert the value to the client's local date and time.
          *
-         * <tr><td>Applicable Outlook mode</td><td>Appointment Organizer</td></tr></table>
-         * 
-         * In addition to this signature, the method also has the following signature:
-         * 
-         * `addHandlerAsync(eventType:EventType, handler: any, callback?: (result: AsyncResult) => void): void;`
-         * 
-         * @param eventType The event that should invoke the handler.
-         * @param handler The function to handle the event. The function must accept a single parameter, which is an object literal. The type property on the parameter will match the eventType parameter passed to addHandlerAsync.
-         * @param options Optional. An object literal that contains one or more of the following properties.
-         *        asyncContext: Developers can provide any object they wish to access in the callback method.
-         * @param callback Optional. When the method completes, the function passed in the callback parameter is called with a single parameter, asyncResult, which is an AsyncResult object.
-         * 
-         * @beta
-         */
-        addHandlerAsync(eventType:EventType, handler: any, options?: any, callback?: (result: AsyncResult) => void): void;
-
-        /**
-         * Adds an event handler for a supported event.
-         * 
-         * Currently the only supported event type is Office.EventType.RecurrencePatternChanged, which is invoked when the user changes the recurrence pattern of a series.
-         * 
-         * [Api set: Mailbox Preview]
+         * When you use the Time.setAsync method to set the start time, you should use the convertToUtcClientTime method to convert the local time on the client to UTC for the server.
+         *
+         * [Api set: Mailbox 1.0]
          *
          * @remarks
          *
          * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
          *
          * <tr><td>Applicable Outlook mode</td><td>Appointment Organizer</td></tr></table>
-         * 
-         * @param eventType The event that should invoke the handler.
-         * @param handler The function to handle the event. The function must accept a single parameter, which is an object literal. The type property on the parameter will match the eventType parameter passed to addHandlerAsync.
-         * @param callback Optional. When the method completes, the function passed in the callback parameter is called with a single parameter, asyncResult, which is an AsyncResult object.
-         * 
-         * @beta
          */
-        addHandlerAsync(eventType:EventType, handler: any, callback?: (result: AsyncResult) => void): void;
-
-       /**
-        * Asynchronously loads custom properties for this add-in on the selected item.
-        *
-        * Custom properties are stored as key/value pairs on a per-app, per-item basis. This method returns a CustomProperties object in the callback, which provides methods to access the custom properties specific to the current item and the current add-in. Custom properties are not encrypted on the item, so this should not be used as secure storage.
-        *
-        * The custom properties are provided as a CustomProperties object in the asyncResult.value property. This object can be used to get, set, and remove custom properties from the item and save changes to the custom property set back to the server.
-        *
-        * [Api set: Mailbox 1.0]
-        *
-        * @remarks
-        *
-        * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
-        *
-        * <tr><td>Applicable Outlook mode</td><td>Appointment Organizer</td></tr></table>
-        *
-        * @param callback When the method completes, the function passed in the callback parameter is called with a single parameter of type AsyncResult.
-        * @param userContext Optional. Developers can provide any object they wish to access in the callback function. This object can be accessed by the asyncResult.asyncContext property in the callback function.
-        */
-       loadCustomPropertiesAsync(callback: (result: AsyncResult) => void, userContext?: any): void;
-
-       /**
-        * Removes an event handler for a supported event.
-        * 
-        * Currently the only supported event type is Office.EventType.RecurrencePatternChanged, which is invoked when the user changes the recurrence pattern of a series.
-        * 
-        * [Api set: Mailbox Preview]
-        *
-        * @remarks
-        *
-        * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
-        *
-        * <tr><td>Applicable Outlook mode</td><td>Appointment Organizer</td></tr></table>
-        * 
-        * In addition to this signature, the method also has the following signature:
-        * 
-        * `removeHandlerAsync(eventType:EventType, handler: any, callback?: (result: AsyncResult) => void): void;`
-        * 
-        * @param eventType The event that should invoke the handler.
-        * @param handler The function to handle the event. The function must accept a single parameter, which is an object literal. The type property on the parameter will match the eventType parameter passed to removeHandlerAsync.
-        * @param options Optional. An object literal that contains one or more of the following properties.
-        *        asyncContext: Developers can provide any object they wish to access in the callback method.
-        * @param callback Optional. When the method completes, the function passed in the callback parameter is called with a single parameter, asyncResult, which is an AsyncResult object.
-        * 
-        * @beta
-        */
-       removeHandlerAsync(eventType:EventType, handler: any, options?: any, callback?: (result: AsyncResult) => void): void;
-
-       /**
-        * Removes an event handler for a supported event.
-        * 
-        * Currently the only supported event type is Office.EventType.RecurrencePatternChanged, which is invoked when the user changes the recurrence pattern of a series.
-        * 
-        * [Api set: Mailbox Preview]
-        *
-        * @remarks
-        *
-        * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
-        *
-        * <tr><td>Applicable Outlook mode</td><td>Appointment Organizer</td></tr></table>
-        * 
-        * @param eventType The event that should invoke the handler.
-        * @param handler The function to handle the event. The function must accept a single parameter, which is an object literal. The type property on the parameter will match the eventType parameter passed to removeHandlerAsync.
-        * @param callback Optional. When the method completes, the function passed in the callback parameter is called with a single parameter, asyncResult, which is an AsyncResult object.
-        * 
-        * @beta
-        */
-       removeHandlerAsync(eventType:EventType, handler: any, callback?: (result: AsyncResult) => void): void;
-
-       /**
+        start: Time;
+        /**
          * Gets or sets the description that appears in the subject field of an item.
          *
          * The subject property gets or sets the entire subject of the item, as sent by the email server.
@@ -7498,7 +7530,52 @@ declare namespace Office {
          * @param callback When the method completes, the function passed in the callback parameter is called with a single parameter of type asyncResult. On success, the attachment identifier will be provided in the asyncResult.value property. If uploading the attachment fails, the asyncResult object will contain an Error object that provides a description of the error.
          */
         addFileAttachmentAsync(uri: string, attachmentName: string, callback: (result: AsyncResult) => void): void;
-
+        /**
+         * Adds an event handler for a supported event.
+         * 
+         * Currently the only supported event type is Office.EventType.RecurrencePatternChanged, which is invoked when the user changes the recurrence pattern of a series.
+         * 
+         * [Api set: Mailbox Preview]
+         *
+         * @remarks
+         * 
+         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
+         *
+         * <tr><td>Applicable Outlook mode</td><td>Appointment Organizer</td></tr></table>
+         * 
+         * In addition to this signature, the method also has the following signature:
+         * 
+         * `addHandlerAsync(eventType:EventType, handler: any, callback?: (result: AsyncResult) => void): void;`
+         * 
+         * @param eventType The event that should invoke the handler.
+         * @param handler The function to handle the event. The function must accept a single parameter, which is an object literal. The type property on the parameter will match the eventType parameter passed to addHandlerAsync.
+         * @param options Optional. An object literal that contains one or more of the following properties.
+         *        asyncContext: Developers can provide any object they wish to access in the callback method.
+         * @param callback Optional. When the method completes, the function passed in the callback parameter is called with a single parameter, asyncResult, which is an AsyncResult object.
+         * 
+         * @beta
+         */
+        addHandlerAsync(eventType:EventType, handler: any, options?: any, callback?: (result: AsyncResult) => void): void;
+        /**
+         * Adds an event handler for a supported event.
+         * 
+         * Currently the only supported event type is Office.EventType.RecurrencePatternChanged, which is invoked when the user changes the recurrence pattern of a series.
+         * 
+         * [Api set: Mailbox Preview]
+         *
+         * @remarks
+         *
+         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
+         *
+         * <tr><td>Applicable Outlook mode</td><td>Appointment Organizer</td></tr></table>
+         * 
+         * @param eventType The event that should invoke the handler.
+         * @param handler The function to handle the event. The function must accept a single parameter, which is an object literal. The type property on the parameter will match the eventType parameter passed to addHandlerAsync.
+         * @param callback Optional. When the method completes, the function passed in the callback parameter is called with a single parameter, asyncResult, which is an AsyncResult object.
+         * 
+         * @beta
+         */
+        addHandlerAsync(eventType:EventType, handler: any, callback?: (result: AsyncResult) => void): void;
         /**
          * Adds an Exchange item, such as a message, as an attachment to the message or appointment.
          *
@@ -7601,7 +7678,6 @@ declare namespace Office {
          * @param callback When the method completes, the function passed in the callback parameter is called with a single parameter of type AsyncResult. On success, the attachment identifier will be provided in the asyncResult.value property. If adding the attachment fails, the asyncResult object will contain an Error object that provides a description of the error.
          */
         addItemAttachmentAsync(itemId: any, attachmentName: string, callback: (result: AsyncResult) => void): void;
-
         /**
          * Closes the current item that is being composed
          *
@@ -7688,6 +7764,25 @@ declare namespace Office {
          * @param callback When the method completes, the function passed in the callback parameter is called with a single parameter of type AsyncResult.
          */
         getSelectedDataAsync(coercionType: CoercionType, callback: (result: AsyncResult) => void): void;
+        /**
+         * Asynchronously loads custom properties for this add-in on the selected item.
+         *
+         * Custom properties are stored as key/value pairs on a per-app, per-item basis. This method returns a CustomProperties object in the callback, which provides methods to access the custom properties specific to the current item and the current add-in. Custom properties are not encrypted on the item, so this should not be used as secure storage.
+         *
+         * The custom properties are provided as a CustomProperties object in the asyncResult.value property. This object can be used to get, set, and remove custom properties from the item and save changes to the custom property set back to the server.
+         *
+         * [Api set: Mailbox 1.0]
+         *
+         * @remarks
+         *
+         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
+         *
+         * <tr><td>Applicable Outlook mode</td><td>Appointment Organizer</td></tr></table>
+         *
+         * @param callback When the method completes, the function passed in the callback parameter is called with a single parameter of type AsyncResult.
+         * @param userContext Optional. Developers can provide any object they wish to access in the callback function. This object can be accessed by the asyncResult.asyncContext property in the callback function.
+         */
+        loadCustomPropertiesAsync(callback: (result: AsyncResult) => void, userContext?: any): void;
         /**
          * Removes an attachment from a message or appointment.
          *
@@ -7774,7 +7869,52 @@ declare namespace Office {
          * @param callback Optional. When the method completes, the function passed in the callback parameter is called with a single parameter of type AsyncResult. If removing the attachment fails, the asyncResult.error property will contain an error code with the reason for the failure.
          */
         removeAttachmentAsync(attachmentIndex: string, callback: (result: AsyncResult) => void): void;
-
+       /**
+        * Removes an event handler for a supported event.
+        * 
+        * Currently the only supported event type is Office.EventType.RecurrencePatternChanged, which is invoked when the user changes the recurrence pattern of a series.
+        * 
+        * [Api set: Mailbox Preview]
+        *
+        * @remarks
+        *
+        * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
+        *
+        * <tr><td>Applicable Outlook mode</td><td>Appointment Organizer</td></tr></table>
+        * 
+        * In addition to this signature, the method also has the following signature:
+        * 
+        * `removeHandlerAsync(eventType:EventType, handler: any, callback?: (result: AsyncResult) => void): void;`
+        * 
+        * @param eventType The event that should invoke the handler.
+        * @param handler The function to handle the event. The function must accept a single parameter, which is an object literal. The type property on the parameter will match the eventType parameter passed to removeHandlerAsync.
+        * @param options Optional. An object literal that contains one or more of the following properties.
+        *        asyncContext: Developers can provide any object they wish to access in the callback method.
+        * @param callback Optional. When the method completes, the function passed in the callback parameter is called with a single parameter, asyncResult, which is an AsyncResult object.
+        * 
+        * @beta
+        */
+       removeHandlerAsync(eventType:EventType, handler: any, options?: any, callback?: (result: AsyncResult) => void): void;
+       /**
+        * Removes an event handler for a supported event.
+        * 
+        * Currently the only supported event type is Office.EventType.RecurrencePatternChanged, which is invoked when the user changes the recurrence pattern of a series.
+        * 
+        * [Api set: Mailbox Preview]
+        *
+        * @remarks
+        *
+        * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
+        *
+        * <tr><td>Applicable Outlook mode</td><td>Appointment Organizer</td></tr></table>
+        * 
+        * @param eventType The event that should invoke the handler.
+        * @param handler The function to handle the event. The function must accept a single parameter, which is an object literal. The type property on the parameter will match the eventType parameter passed to removeHandlerAsync.
+        * @param callback Optional. When the method completes, the function passed in the callback parameter is called with a single parameter, asyncResult, which is an AsyncResult object.
+        * 
+        * @beta
+        */
+       removeHandlerAsync(eventType:EventType, handler: any, callback?: (result: AsyncResult) => void): void;
         /**
          * Asynchronously saves an item.
          *
@@ -7986,6 +8126,7 @@ declare namespace Office {
          */
         setSelectedDataAsync(data: string, callback: (result: AsyncResult) => void): void;
     }
+
     /**
      * The appointment attendee mode of {@link Office.Item | Office.context.mailbox.item}.
      * 
@@ -7993,93 +8134,21 @@ declare namespace Office {
      */
     interface AppointmentRead extends Appointment, ItemRead {
         /**
-         * Gets the date and time that the appointment is to end.
-         *
-         * The end property is a Date object expressed as a Coordinated Universal Time (UTC) date and time value. You can use the convertToLocalClientTime method to convert the end property value to the client's local date and time.
-         *
-         * When you use the Time.setAsync method to set the end time, you should use the convertToUtcClientTime method to convert the local time on the client to UTC for the server.
+         * Gets an array of attachments for the item.
          *
          * [Api set: Mailbox 1.0]
          *
          * @remarks
-         *
+         * 
          * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
          *
          * <tr><td>Applicable Outlook mode</td><td>Appointment Attendee</td></tr></table>
+         *
+         * Note: Certain types of files are blocked by Outlook due to potential security issues and are therefore not returned. For more information, see {@link https://support.office.com/article/Blocked-attachments-in-Outlook-434752E1-02D3-4E90-9124-8B81E49A8519 | Blocked attachments in Outlook}.
+         *
          */
-        end: Date;
+        attachments: AttachmentDetails[];
         /**
-         * Gets the location of an appointment.
-         *
-         * The location property returns a string that contains the location of the appointment.
-         *
-         * [Api set: Mailbox 1.0]
-         *
-         * @remarks
-         *
-         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
-         *
-         * <tr><td>Applicable Outlook mode</td><td>Appointment Attendee</td></tr></table>
-         */
-        location: string;
-        /**
-         * Provides access to the optional attendees of an event. The type of object and level of access depends on the mode of the current item.
-         *
-         * The optionalAttendees property returns an array that contains an {@link Office.EmailAddressDetails} object for each optional attendee to the meeting.
-         *
-         * [Api set: Mailbox 1.0]
-         *
-         * @remarks
-         *
-         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
-         *
-         * <tr><td>Applicable Outlook mode</td><td>Appointment Attendee</td></tr></table>
-         */
-        optionalAttendees: EmailAddressDetails[];
-        /**
-         * Gets the email address of the meeting organizer for a specified meeting. Read mode only.
-         *
-         * [Api set: Mailbox 1.0]
-         *
-         * @remarks
-         *
-         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
-         *
-         * <tr><td>Applicable Outlook mode</td><td>Appointment Attendee</td></tr></table>
-         */
-        organizer: EmailAddressDetails;
-        /**
-         * Provides access to the required attendees of an event. The type of object and level of access depends on the mode of the current item.
-         *
-         * The requiredAttendees property returns an array that contains an {@link Office.EmailAddressDetails} object for each required attendee to the meeting.
-         *
-         * [Api set: Mailbox 1.0]
-         *
-         * @remarks
-         *
-         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
-         *
-         * <tr><td>Applicable Outlook mode</td><td>Appointment Attendee</td></tr></table>
-         */
-        requiredAttendees: EmailAddressDetails[];
-        /**
-         * Gets the date and time that the appointment is to begin.
-         *
-         * The start property is a Date object expressed as a Coordinated Universal Time (UTC) date and time value. You can use the convertToLocalClientTime method to convert the value to the client's local date and time.
-         *
-         * [Api set: Mailbox 1.0]
-         *
-         * @remarks
-         *
-         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
-         *
-         * <tr><td>Applicable Outlook mode</td><td>Appointment Attendee</td></tr></table>
-         */
-        start: Date;
-
-        // Repeated Item Fields //
-
-         /**
          * Gets an object that provides methods for manipulating the body of an item.
          *
          * [Api set: Mailbox 1.1]
@@ -8117,6 +8186,74 @@ declare namespace Office {
          * Note: This member is not supported in Outlook for iOS or Outlook for Android.
          */
         dateTimeModifed: Date;
+        /**
+         * Gets the date and time that the appointment is to end.
+         *
+         * The end property is a Date object expressed as a Coordinated Universal Time (UTC) date and time value. You can use the convertToLocalClientTime method to convert the end property value to the client's local date and time.
+         *
+         * When you use the Time.setAsync method to set the end time, you should use the convertToUtcClientTime method to convert the local time on the client to UTC for the server.
+         *
+         * [Api set: Mailbox 1.0]
+         *
+         * @remarks
+         *
+         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
+         *
+         * <tr><td>Applicable Outlook mode</td><td>Appointment Attendee</td></tr></table>
+         */
+        end: Date;
+        /**
+         * Gets the Exchange Web Services item class of the selected item.
+         *
+         *
+         * You can create custom message classes that extends a default message class, for example, a custom appointment message class IPM.Appointment.Contoso.
+         *
+         * [Api set: Mailbox 1.0]
+         *
+         * @remarks
+         *
+         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
+         *
+         * <tr><td>Applicable Outlook mode</td><td>Appointment Attendee</td></tr></table>
+         * 
+         * The itemClass property specifies the message class of the selected item. The following are the default message classes for the message or appointment item.
+         * 
+         * <table>
+         *   <tr>
+         *     <th>Type</th>
+         *     <th>Description</th>
+         *     <th>Item Class</th>
+         *   </tr>
+         *   <tr>
+         *     <td>Appointment items</td>
+         *     <td>These are calendar items of the item class IPM.Appointment or IPM.Appointment.Occurence.</td>
+         *     <td>IPM.Appointment,IPM.Appointment.Occurence</td>
+         *   </tr>
+         *   <tr>
+         *     <td>Message items</td>
+         *     <td>These include email messages that have the default message class IPM.Note, and meeting requests, responses, and cancellations, that use IPM.Schedule.Meeting as the base message class.</td>
+         *     <td>IPM.Note,IPM.Schedule.Meeting.Request,IPM.Schedule.Meeting.Neg,IPM.Schedule.Meeting.Pos,IPM.Schedule.Meeting.Tent,IPM.Schedule.Meeting.Canceled</td>
+         *   </tr>
+         * </table>
+         * 
+         */
+        itemClass: string;
+        /**
+         * Gets the Exchange Web Services item identifier for the current item.
+         *
+         * The itemId property is not available in compose mode. If an item identifier is required, the saveAsync method can be used to save the item to the store, which will return the item identifier in the AsyncResult.value parameter in the callback function.
+         *
+         * Note: The identifier returned by the itemId property is the same as the Exchange Web Services item identifier. The itemId property is not identical to the Outlook Entry ID or the ID used by the Outlook REST API. Before making REST API calls using this value, it should be converted using Office.context.mailbox.convertToRestId. For more details, see Use the Outlook REST APIs from an Outlook add-in.
+         *
+         * [Api set: Mailbox 1.0]
+         *
+         * @remarks
+         *
+         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
+         *
+         * <tr><td>Applicable Outlook mode</td><td>Appointment Attendee</td></tr></table>
+         */
+        itemId: string;
         /**
          * Gets the type of item that an instance represents.
          *
@@ -8131,6 +8268,34 @@ declare namespace Office {
          * <tr><td>Applicable Outlook mode</td><td>Appointment Attendee</td></tr></table>
          */
         itemType: Office.MailboxEnums.ItemType;
+        /**
+         * Gets the location of an appointment.
+         *
+         * The location property returns a string that contains the location of the appointment.
+         *
+         * [Api set: Mailbox 1.0]
+         *
+         * @remarks
+         *
+         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
+         *
+         * <tr><td>Applicable Outlook mode</td><td>Appointment Attendee</td></tr></table>
+         */
+        location: string;
+        /**
+         * Gets the subject of an item, with all prefixes removed (including RE: and FWD:).
+         *
+         * The normalizedSubject property gets the subject of the item, with any standard prefixes (such as RE: and FW:) that are added by email programs. To get the subject of the item with the prefixes intact, use the subject property.
+         *
+         * [Api set: Mailbox 1.0]
+         *
+         * @remarks
+         *
+         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
+         *
+         * <tr><td>Applicable Outlook mode</td><td>Appointment Attendee</td></tr></table>
+         */
+        normalizedSubject: string;
         /**
          * Gets the notification messages for an item.
          *
@@ -8143,7 +8308,32 @@ declare namespace Office {
          * <tr><td>Applicable Outlook mode</td><td>Appointment Attendee</td></tr></table>
          */
         notificationMessages: NotificationMessages;
-
+        /**
+         * Provides access to the optional attendees of an event. The type of object and level of access depends on the mode of the current item.
+         *
+         * The optionalAttendees property returns an array that contains an {@link Office.EmailAddressDetails} object for each optional attendee to the meeting.
+         *
+         * [Api set: Mailbox 1.0]
+         *
+         * @remarks
+         *
+         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
+         *
+         * <tr><td>Applicable Outlook mode</td><td>Appointment Attendee</td></tr></table>
+         */
+        optionalAttendees: EmailAddressDetails[];
+        /**
+         * Gets the email address of the meeting organizer for a specified meeting. Read mode only.
+         *
+         * [Api set: Mailbox 1.0]
+         *
+         * @remarks
+         *
+         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
+         *
+         * <tr><td>Applicable Outlook mode</td><td>Appointment Attendee</td></tr></table>
+         */
+        organizer: EmailAddressDetails;
         /**
          * Gets the recurrence pattern of an appointment. Gets the recurrence pattern of a meeting request.
          * 
@@ -8164,7 +8354,34 @@ declare namespace Office {
          * @beta
          */
         recurrence: Recurrence;
-
+        /**
+         * Provides access to the required attendees of an event. The type of object and level of access depends on the mode of the current item.
+         *
+         * The requiredAttendees property returns an array that contains an {@link Office.EmailAddressDetails} object for each required attendee to the meeting.
+         *
+         * [Api set: Mailbox 1.0]
+         *
+         * @remarks
+         *
+         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
+         *
+         * <tr><td>Applicable Outlook mode</td><td>Appointment Attendee</td></tr></table>
+         */
+        requiredAttendees: EmailAddressDetails[];
+        /**
+         * Gets the date and time that the appointment is to begin.
+         *
+         * The start property is a Date object expressed as a Coordinated Universal Time (UTC) date and time value. You can use the convertToLocalClientTime method to convert the value to the client's local date and time.
+         *
+         * [Api set: Mailbox 1.0]
+         *
+         * @remarks
+         *
+         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
+         *
+         * <tr><td>Applicable Outlook mode</td><td>Appointment Attendee</td></tr></table>
+         */
+        start: Date;
         /**
          * Gets the id of the series that an instance belongs to.
          * 
@@ -8185,6 +8402,22 @@ declare namespace Office {
          * @beta
          */
         seriesId: string;
+        /**
+         * Gets the description that appears in the subject field of an item.
+         *
+         * The subject property gets or sets the entire subject of the item, as sent by the email server.
+         *
+         * The subject property returns a string. Use the normalizedSubject property to get the subject minus any leading prefixes such as RE: and FW:.
+         *
+         * [Api set: Mailbox 1.0]
+         *
+         * @remarks
+         *
+         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
+         *
+         * <tr><td>Applicable Outlook mode</td><td>Appointment Attendee</td></tr></table>
+         */
+        subject: string;
 
         /**
          * Adds an event handler for a supported event.
@@ -8233,173 +8466,6 @@ declare namespace Office {
          * @beta
          */
         addHandlerAsync(eventType:EventType, handler: any, callback?: (result: AsyncResult) => void): void;
-
-       /**
-        * Asynchronously loads custom properties for this add-in on the selected item.
-        *
-        * Custom properties are stored as key/value pairs on a per-app, per-item basis. This method returns a CustomProperties object in the callback, which provides methods to access the custom properties specific to the current item and the current add-in. Custom properties are not encrypted on the item, so this should not be used as secure storage.
-        *
-        * The custom properties are provided as a CustomProperties object in the asyncResult.value property. This object can be used to get, set, and remove custom properties from the item and save changes to the custom property set back to the server.
-        *
-        * [Api set: Mailbox 1.0]
-        *
-        * @remarks
-        *
-        * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
-        *
-        * <tr><td>Applicable Outlook mode</td><td>Appointment Attendee</td></tr></table>
-        *
-        * @param callback When the method completes, the function passed in the callback parameter is called with a single parameter of type AsyncResult.
-        * @param userContext Optional. Developers can provide any object they wish to access in the callback function. This object can be accessed by the asyncResult.asyncContext property in the callback function.
-        */
-       loadCustomPropertiesAsync(callback: (result: AsyncResult) => void, userContext?: any): void;
-
-       /**
-        * Removes an event handler for a supported event.
-        * 
-        * Currently the only supported event type is Office.EventType.RecurrencePatternChanged, which is invoked when the user changes the recurrence pattern of a series.
-        * 
-        * [Api set: Mailbox Preview]
-        *
-        * @remarks
-        *
-        * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
-        *
-        * <tr><td>Applicable Outlook mode</td><td>Appointment Attendee</td></tr></table>
-        * 
-        * In addition to this signature, the method also has the following signature:
-        * 
-        * `removeHandlerAsync(eventType:EventType, handler: any, callback?: (result: AsyncResult) => void): void;`
-        * 
-        * @param eventType The event that should invoke the handler.
-        * @param handler The function to handle the event. The function must accept a single parameter, which is an object literal. The type property on the parameter will match the eventType parameter passed to removeHandlerAsync.
-        * @param options Optional. An object literal that contains one or more of the following properties.
-        *        asyncContext: Developers can provide any object they wish to access in the callback method.
-        * @param callback Optional. When the method completes, the function passed in the callback parameter is called with a single parameter, asyncResult, which is an AsyncResult object.
-        * 
-        * @beta
-        */
-       removeHandlerAsync(eventType:EventType, handler: any, options?: any, callback?: (result: AsyncResult) => void): void;
-
-       /**
-        * Removes an event handler for a supported event.
-        * 
-        * Currently the only supported event type is Office.EventType.RecurrencePatternChanged, which is invoked when the user changes the recurrence pattern of a series.
-        * 
-        * [Api set: Mailbox Preview]
-        *
-        * @remarks
-        *
-        * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
-        *
-        * <tr><td>Applicable Outlook mode</td><td>Appointment Attendee</td></tr></table>
-        * 
-        * @param eventType The event that should invoke the handler.
-        * @param handler The function to handle the event. The function must accept a single parameter, which is an object literal. The type property on the parameter will match the eventType parameter passed to removeHandlerAsync.
-        * @param callback Optional. When the method completes, the function passed in the callback parameter is called with a single parameter, asyncResult, which is an AsyncResult object.
-        * 
-        * @beta
-        */
-       removeHandlerAsync(eventType:EventType, handler: any, callback?: (result: AsyncResult) => void): void;
-
-        /**
-         * Gets an array of attachments for the item.
-         *
-         * [Api set: Mailbox 1.0]
-         *
-         * @remarks
-         * 
-         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
-         *
-         * <tr><td>Applicable Outlook mode</td><td>Appointment Attendee</td></tr></table>
-         *
-         * Note: Certain types of files are blocked by Outlook due to potential security issues and are therefore not returned. For more information, see {@link https://support.office.com/article/Blocked-attachments-in-Outlook-434752E1-02D3-4E90-9124-8B81E49A8519 | Blocked attachments in Outlook}.
-         *
-         */
-        attachments: AttachmentDetails[];
-        /**
-         * Gets the Exchange Web Services item class of the selected item.
-         *
-         *
-         * You can create custom message classes that extends a default message class, for example, a custom appointment message class IPM.Appointment.Contoso.
-         *
-         * [Api set: Mailbox 1.0]
-         *
-         * @remarks
-         *
-         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
-         *
-         * <tr><td>Applicable Outlook mode</td><td>Appointment Attendee</td></tr></table>
-         * 
-         * The itemClass property specifies the message class of the selected item. The following are the default message classes for the message or appointment item.
-         * 
-         * <table>
-         *   <tr>
-         *     <th>Type</th>
-         *     <th>Description</th>
-         *     <th>Item Class</th>
-         *   </tr>
-         *   <tr>
-         *     <td>Appointment items</td>
-         *     <td>These are calendar items of the item class IPM.Appointment or IPM.Appointment.Occurence.</td>
-         *     <td>IPM.Appointment,IPM.Appointment.Occurence</td>
-         *   </tr>
-         *   <tr>
-         *     <td>Message items</td>
-         *     <td>These include email messages that have the default message class IPM.Note, and meeting requests, responses, and cancellations, that use IPM.Schedule.Meeting as the base message class.</td>
-         *     <td>IPM.Note,IPM.Schedule.Meeting.Request,IPM.Schedule.Meeting.Neg,IPM.Schedule.Meeting.Pos,IPM.Schedule.Meeting.Tent,IPM.Schedule.Meeting.Canceled</td>
-         *   </tr>
-         * </table>
-         * 
-         */
-        itemClass: string;
-        
-        /**
-         * Gets the Exchange Web Services item identifier for the current item.
-         *
-         * The itemId property is not available in compose mode. If an item identifier is required, the saveAsync method can be used to save the item to the store, which will return the item identifier in the AsyncResult.value parameter in the callback function.
-         *
-         * Note: The identifier returned by the itemId property is the same as the Exchange Web Services item identifier. The itemId property is not identical to the Outlook Entry ID or the ID used by the Outlook REST API. Before making REST API calls using this value, it should be converted using Office.context.mailbox.convertToRestId. For more details, see Use the Outlook REST APIs from an Outlook add-in.
-         *
-         * [Api set: Mailbox 1.0]
-         *
-         * @remarks
-         *
-         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
-         *
-         * <tr><td>Applicable Outlook mode</td><td>Appointment Attendee</td></tr></table>
-         */
-        itemId: string;
-        /**
-         * Gets the subject of an item, with all prefixes removed (including RE: and FWD:).
-         *
-         * The normalizedSubject property gets the subject of the item, with any standard prefixes (such as RE: and FW:) that are added by email programs. To get the subject of the item with the prefixes intact, use the subject property.
-         *
-         * [Api set: Mailbox 1.0]
-         *
-         * @remarks
-         *
-         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
-         *
-         * <tr><td>Applicable Outlook mode</td><td>Appointment Attendee</td></tr></table>
-         */
-        normalizedSubject: string;
-        /**
-         * Gets the description that appears in the subject field of an item.
-         *
-         * The subject property gets or sets the entire subject of the item, as sent by the email server.
-         *
-         * The subject property returns a string. Use the normalizedSubject property to get the subject minus any leading prefixes such as RE: and FW:.
-         *
-         * [Api set: Mailbox 1.0]
-         *
-         * @remarks
-         *
-         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
-         *
-         * <tr><td>Applicable Outlook mode</td><td>Appointment Attendee</td></tr></table>
-         */
-        subject: string;
         /**
          * Displays a reply form that includes the sender and all recipients of the selected message or the organizer and all attendees of the selected appointment.
          *
@@ -8666,161 +8732,72 @@ declare namespace Office {
          * <tr><td>Applicable Outlook mode</td><td>Appointment Attendee</td></tr></table>
          */
         getSelectedRegExMatches(): any;
-    }
+       /**
+        * Asynchronously loads custom properties for this add-in on the selected item.
+        *
+        * Custom properties are stored as key/value pairs on a per-app, per-item basis. This method returns a CustomProperties object in the callback, which provides methods to access the custom properties specific to the current item and the current add-in. Custom properties are not encrypted on the item, so this should not be used as secure storage.
+        *
+        * The custom properties are provided as a CustomProperties object in the asyncResult.value property. This object can be used to get, set, and remove custom properties from the item and save changes to the custom property set back to the server.
+        *
+        * [Api set: Mailbox 1.0]
+        *
+        * @remarks
+        *
+        * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
+        *
+        * <tr><td>Applicable Outlook mode</td><td>Appointment Attendee</td></tr></table>
+        *
+        * @param callback When the method completes, the function passed in the callback parameter is called with a single parameter of type AsyncResult.
+        * @param userContext Optional. Developers can provide any object they wish to access in the callback function. This object can be accessed by the asyncResult.asyncContext property in the callback function.
+        */
+       loadCustomPropertiesAsync(callback: (result: AsyncResult) => void, userContext?: any): void;
 
-    /**
-     * The AppointmentForm namespace is used to access the currently selected appointment.
-     *
-     * [Api set: Mailbox 1.0]
-     *
-     * @remarks
-     * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>Restricted</td></tr>
-     *
-     * <tr><td>Applicable Outlook mode</td><td>Compose or read</td></tr></table>
-     */
-    interface AppointmentForm {
-        /**
-         * Gets an object that provides methods for manipulating the body of an item.
-         *
-         * [Api set: Mailbox 1.1]
-         *
-         * @remarks
-         *
-         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
-         *
-         * <tr><td>Applicable Outlook mode</td><td>Compose or read</td></tr></table>
-         */
-        body: string;
-        /**
-         * Gets or sets the date and time that the appointment is to end.
-         *
-         * The end property is expressed as a Coordinated Universal Time (UTC) date and time value. You can use the convertToLocalClientTime method to convert the end property value to the client's local date and time.
-         *
-         * *Read mode*
-         *
-         * The end property returns a Date object.
-         *
-         * *Compose mode*
-         *
-         * The end property returns a Time object.
-         *
-         * When you use the Time.setAsync method to set the end time, you should use the convertToUtcClientTime method to convert the local time on the client to UTC for the server.
-         *
-         * [Api set: Mailbox 1.0]
-         *
-         * @remarks
-         *
-         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
-         *
-         * <tr><td>Applicable Outlook mode</td><td>Compose or read</td></tr></table>
-         */
-        end: Date;
-        /**
-        * Gets or sets the location of an appointment.
-        *
-        * *Read mode*
-        *
-        * The location property returns a string that contains the location of the appointment.
-        *
-        * *Compose mode*
-        *
-        * The location property returns a Location object that provides methods that are used to get and set the location of the appointment.
-        *
-        * [Api set: Mailbox 1.0]
-        *
-        * @remarks
-        *
-        * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
-        * <tr><td>Applicable Outlook mode</td><td>Compose or read</td></tr></table>
-        */
-        location: string;
-        /**
-        * Provides access to the optional attendees of an event. The type of object and level of access depends on the mode of the current item.
-        *
-        * *Read mode*
-        *
-        * The optionalAttendees property returns an array that contains an EmailAddressDetails object for each optional attendee to the meeting.
-        *
-        * *Compose mode*
-        *
-        * The optionalAttendees property returns a Recipients object that provides methods to get or update the optional attendees for a meeting.
-        *
-        * [Api set: Mailbox 1.0]
+       /**
+        * Removes an event handler for a supported event.
+        * 
+        * Currently the only supported event type is Office.EventType.RecurrencePatternChanged, which is invoked when the user changes the recurrence pattern of a series.
+        * 
+        * [Api set: Mailbox Preview]
         *
         * @remarks
         *
         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
         *
-        * <tr><td>Applicable Outlook mode</td><td>Compose or read</td></tr></table>
+        * <tr><td>Applicable Outlook mode</td><td>Appointment Attendee</td></tr></table>
+        * 
+        * In addition to this signature, the method also has the following signature:
+        * 
+        * `removeHandlerAsync(eventType:EventType, handler: any, callback?: (result: AsyncResult) => void): void;`
+        * 
+        * @param eventType The event that should invoke the handler.
+        * @param handler The function to handle the event. The function must accept a single parameter, which is an object literal. The type property on the parameter will match the eventType parameter passed to removeHandlerAsync.
+        * @param options Optional. An object literal that contains one or more of the following properties.
+        *        asyncContext: Developers can provide any object they wish to access in the callback method.
+        * @param callback Optional. When the method completes, the function passed in the callback parameter is called with a single parameter, asyncResult, which is an AsyncResult object.
+        * 
+        * @beta
         */
-       optionalAttendees: string[] | EmailAddressDetails[];
-       resources: string[];
-        /**
-         * Provides access to the required attendees of an event. The type of object and level of access depends on the mode of the current item.
-         *
-         * *Read mode*
-         *
-         * The requiredAttendees property returns an array that contains an EmailAddressDetails object for each required attendee to the meeting.
-         *
-         * *Compose mode*
-         *
-         * The requiredAttendees property returns a Recipients object that provides methods to get or update the required attendees for a meeting.
-         *
-         * [Api set: Mailbox 1.0]
-         *
-         * @remarks
-         *
-         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
-         *
-         * <tr><td>Applicable Outlook mode</td><td>Compose or read</td></tr></table>
-         */
-        requiredAttendees: string[] | EmailAddressDetails[];
-        /**
-         * Gets or sets the date and time that the appointment is to begin.
-         *
-         * The start property is expressed as a Coordinated Universal Time (UTC) date and time value. You can use the convertToLocalClientTime method to convert the value to the client's local date and time.
-         *
-         * *Read mode*
-         *
-         * The start property returns a Date object.
-         *
-         * *Compose mode*
-         *
-         * The start property returns a Time object.
-         *
-         * When you use the Time.setAsync method to set the start time, you should use the convertToUtcClientTime method to convert the local time on the client to UTC for the server.
-         *
-         * [Api set: Mailbox 1.0]
-         *
-         * @remarks
-         *
-         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
-         *
-         * <tr><td>Applicable Outlook mode</td><td>Compose or read</td></tr></table>
-         */
-        start: Date;
-        /**
-         * Gets or sets the description that appears in the subject field of an item.
-         *
-         * The subject property gets or sets the entire subject of the item, as sent by the email server.
-         *
-         * *Read mode*
-         *
-         * The subject property returns a string. Use the normalizedSubject property to get the subject minus any leading prefixes such as RE: and FW:.
-         *
-         * *Compose mode*
-         *
-         * The subject property returns a Subject object that provides methods to get and set the subject.
-         *
-         * [Api set: Mailbox 1.0]
-         *
-         * @remarks
-         *
-         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
-         *
-         * <tr><td>Applicable Outlook mode</td><td>Compose or read</td></tr></table>
-         */
-        subject: string;
+       removeHandlerAsync(eventType:EventType, handler: any, options?: any, callback?: (result: AsyncResult) => void): void;
+       /**
+        * Removes an event handler for a supported event.
+        * 
+        * Currently the only supported event type is Office.EventType.RecurrencePatternChanged, which is invoked when the user changes the recurrence pattern of a series.
+        * 
+        * [Api set: Mailbox Preview]
+        *
+        * @remarks
+        *
+        * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
+        *
+        * <tr><td>Applicable Outlook mode</td><td>Appointment Attendee</td></tr></table>
+        * 
+        * @param eventType The event that should invoke the handler.
+        * @param handler The function to handle the event. The function must accept a single parameter, which is an object literal. The type property on the parameter will match the eventType parameter passed to removeHandlerAsync.
+        * @param callback Optional. When the method completes, the function passed in the callback parameter is called with a single parameter, asyncResult, which is an AsyncResult object.
+        * 
+        * @beta
+        */
+       removeHandlerAsync(eventType:EventType, handler: any, callback?: (result: AsyncResult) => void): void; 
     }
 
     /**
@@ -10073,6 +10050,18 @@ declare namespace Office {
          * <tr><td>Applicable Outlook mode</td><td>Message Compose</td></tr></table>
          */
         bcc: Recipients;
+        /**
+         * Gets an object that provides methods for manipulating the body of an item.
+         *
+         * [Api set: Mailbox 1.1]
+         *
+         * @remarks
+         *
+         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
+         *
+         * <tr><td>Applicable Outlook mode</td><td>Message Compose</td></tr></table>
+         */
+        body: Body;
         /**
          * Provides access to the Cc (carbon copy) recipients of a message. The type of object and level of access depends on the mode of the current item.
          *
@@ -10087,53 +10076,6 @@ declare namespace Office {
          * <tr><td>Applicable Outlook mode</td><td>Message Compose</td></tr></table>
          */
         cc: Recipients;
-        /**
-         * Gets the email address of the sender of a message.
-         *
-         * The from and sender properties represent the same person unless the message is sent by a delegate. In that case, the from property represents the delegator, and the sender property represents the delegate.
-         *
-         * The from property returns a From object that provides a method to get the from value.
-         * 
-         * [Api set: Mailbox Preview]
-         *
-         * @remarks
-         *
-         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
-         *
-         * <tr><td>Applicable Outlook mode</td><td>Message Compose</td></tr></table>
-         *
-         * @beta
-         */
-        from: From;
-        /**
-         * Provides access to the recipients on the To line of a message. The type of object and level of access depends on the mode of the current item.
-         *
-         * The to property returns a Recipients object that provides methods to get or update the recipients on the To line of the message.
-         *
-         * [Api set: Mailbox 1.0]
-         *
-         * @remarks
-         *
-         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
-         *
-         * <tr><td>Applicable Outlook mode</td><td>Message Compose</td></tr></table>
-         */
-        to: Recipients;
-
-        // Repeated Item Fields //
-
-        /**
-         * Gets an object that provides methods for manipulating the body of an item.
-         *
-         * [Api set: Mailbox 1.1]
-         *
-         * @remarks
-         *
-         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
-         *
-         * <tr><td>Applicable Outlook mode</td><td>Message Compose</td></tr></table>
-         */
-        body: Body;
         /**
          * Gets the date and time that an item was created. Read mode only.
          *
@@ -10160,6 +10102,24 @@ declare namespace Office {
          * Note: This member is not supported in Outlook for iOS or Outlook for Android.
          */
         dateTimeModifed: Date;
+        /**
+         * Gets the email address of the sender of a message.
+         *
+         * The from and sender properties represent the same person unless the message is sent by a delegate. In that case, the from property represents the delegator, and the sender property represents the delegate.
+         *
+         * The from property returns a From object that provides a method to get the from value.
+         * 
+         * [Api set: Mailbox Preview]
+         *
+         * @remarks
+         *
+         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
+         *
+         * <tr><td>Applicable Outlook mode</td><td>Message Compose</td></tr></table>
+         *
+         * @beta
+         */
+        from: From;
         /**
          * Gets the type of item that an instance represents.
          *
@@ -10186,7 +10146,6 @@ declare namespace Office {
          * <tr><td>Applicable Outlook mode</td><td>Message Compose</td></tr></table>
          */
         notificationMessages: NotificationMessages;
-
         /**
          * Gets or sets the recurrence pattern of an appointment. Gets the recurrence pattern of a meeting request. Read and compose modes for appointment items. Read mode for meeting request items.
          * 
@@ -10207,7 +10166,6 @@ declare namespace Office {
          * @beta
          */
         recurrence: Recurrence;
-
         /**
          * Gets the id of the series that an instance belongs to.
          * 
@@ -10228,124 +10186,7 @@ declare namespace Office {
          * @beta
          */
         seriesId: string;
-
         /**
-         * Adds an event handler for a supported event.
-         * 
-         * Currently the only supported event type is Office.EventType.RecurrencePatternChanged, which is invoked when the user changes the recurrence pattern of a series.
-         * 
-         * [Api set: Mailbox Preview]
-         *
-         * @remarks
-         *
-         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
-         *
-         * <tr><td>Applicable Outlook mode</td><td>Message Compose</td></tr></table>
-         * 
-         * In addition to this signature, the method also has the following signature:
-         * 
-         * `addHandlerAsync(eventType:EventType, handler: any, callback?: (result: AsyncResult) => void): void;`
-         * 
-         * @param eventType The event that should invoke the handler.
-         * @param handler The function to handle the event. The function must accept a single parameter, which is an object literal. The type property on the parameter will match the eventType parameter passed to addHandlerAsync.
-         * @param options Optional. An object literal that contains one or more of the following properties.
-         *        asyncContext: Developers can provide any object they wish to access in the callback method.
-         * @param callback Optional. When the method completes, the function passed in the callback parameter is called with a single parameter, asyncResult, which is an AsyncResult object.
-         * 
-         * @beta
-         */
-        addHandlerAsync(eventType:EventType, handler: any, options?: any, callback?: (result: AsyncResult) => void): void;
-
-        /**
-         * Adds an event handler for a supported event.
-         * 
-         * Currently the only supported event type is Office.EventType.RecurrencePatternChanged, which is invoked when the user changes the recurrence pattern of a series.
-         * 
-         * [Api set: Mailbox Preview]
-         *
-         * @remarks
-         *
-         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
-         *
-         * <tr><td>Applicable Outlook mode</td><td>Message Compose</td></tr></table>
-         * 
-         * @param eventType The event that should invoke the handler.
-         * @param handler The function to handle the event. The function must accept a single parameter, which is an object literal. The type property on the parameter will match the eventType parameter passed to addHandlerAsync.
-         * @param callback Optional. When the method completes, the function passed in the callback parameter is called with a single parameter, asyncResult, which is an AsyncResult object.
-         * 
-         * @beta
-         */
-        addHandlerAsync(eventType:EventType, handler: any, callback?: (result: AsyncResult) => void): void;
-
-       /**
-        * Asynchronously loads custom properties for this add-in on the selected item.
-        *
-        * Custom properties are stored as key/value pairs on a per-app, per-item basis. This method returns a CustomProperties object in the callback, which provides methods to access the custom properties specific to the current item and the current add-in. Custom properties are not encrypted on the item, so this should not be used as secure storage.
-        *
-        * The custom properties are provided as a CustomProperties object in the asyncResult.value property. This object can be used to get, set, and remove custom properties from the item and save changes to the custom property set back to the server.
-        *
-        * [Api set: Mailbox 1.0]
-        *
-        * @remarks
-        *
-        * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
-        *
-        * <tr><td>Applicable Outlook mode</td><td>Message Compose</td></tr></table>
-        *
-        * @param callback When the method completes, the function passed in the callback parameter is called with a single parameter of type AsyncResult.
-        * @param userContext Optional. Developers can provide any object they wish to access in the callback function. This object can be accessed by the asyncResult.asyncContext property in the callback function.
-        */
-       loadCustomPropertiesAsync(callback: (result: AsyncResult) => void, userContext?: any): void;
-
-       /**
-        * Removes an event handler for a supported event.
-        * 
-        * Currently the only supported event type is Office.EventType.RecurrencePatternChanged, which is invoked when the user changes the recurrence pattern of a series.
-        * 
-        * [Api set: Mailbox Preview]
-        *
-        * @remarks
-        *
-        * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
-        *
-        * <tr><td>Applicable Outlook mode</td><td>Message Compose</td></tr></table>
-        * 
-        * In addition to this signature, the method also has the following signature:
-        * 
-        * `removeHandlerAsync(eventType:EventType, handler: any, callback?: (result: AsyncResult) => void): void;`
-        * 
-        * @param eventType The event that should invoke the handler.
-        * @param handler The function to handle the event. The function must accept a single parameter, which is an object literal. The type property on the parameter will match the eventType parameter passed to removeHandlerAsync.
-        * @param options Optional. An object literal that contains one or more of the following properties.
-        *        asyncContext: Developers can provide any object they wish to access in the callback method.
-        * @param callback Optional. When the method completes, the function passed in the callback parameter is called with a single parameter, asyncResult, which is an AsyncResult object.
-        * 
-        * @beta
-        */
-       removeHandlerAsync(eventType:EventType, handler: any, options?: any, callback?: (result: AsyncResult) => void): void;
-
-       /**
-        * Removes an event handler for a supported event.
-        * 
-        * Currently the only supported event type is Office.EventType.RecurrencePatternChanged, which is invoked when the user changes the recurrence pattern of a series.
-        * 
-        * [Api set: Mailbox Preview]
-        *
-        * @remarks
-        *
-        * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
-        *
-        * <tr><td>Applicable Outlook mode</td><td>Message Compose</td></tr></table>
-        * 
-        * @param eventType The event that should invoke the handler.
-        * @param handler The function to handle the event. The function must accept a single parameter, which is an object literal. The type property on the parameter will match the eventType parameter passed to removeHandlerAsync.
-        * @param callback Optional. When the method completes, the function passed in the callback parameter is called with a single parameter, asyncResult, which is an AsyncResult object.
-        * 
-        * @beta
-        */
-       removeHandlerAsync(eventType:EventType, handler: any, callback?: (result: AsyncResult) => void): void;
-
-       /**
          * Gets or sets the description that appears in the subject field of an item.
          *
          * The subject property gets or sets the entire subject of the item, as sent by the email server.
@@ -10361,6 +10202,21 @@ declare namespace Office {
          * <tr><td>Applicable Outlook mode</td><td>Message Compose</td></tr></table>
          */
         subject: Subject;
+        /**
+         * Provides access to the recipients on the To line of a message. The type of object and level of access depends on the mode of the current item.
+         *
+         * The to property returns a Recipients object that provides methods to get or update the recipients on the To line of the message.
+         *
+         * [Api set: Mailbox 1.0]
+         *
+         * @remarks
+         *
+         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
+         *
+         * <tr><td>Applicable Outlook mode</td><td>Message Compose</td></tr></table>
+         */
+        to: Recipients;
+
         /**
          * Adds a file to a message or appointment as an attachment.
          *
@@ -10457,7 +10313,52 @@ declare namespace Office {
          * @param callback When the method completes, the function passed in the callback parameter is called with a single parameter of type asyncResult. On success, the attachment identifier will be provided in the asyncResult.value property. If uploading the attachment fails, the asyncResult object will contain an Error object that provides a description of the error.
          */
         addFileAttachmentAsync(uri: string, attachmentName: string, callback: (result: AsyncResult) => void): void;
-
+        /**
+         * Adds an event handler for a supported event.
+         * 
+         * Currently the only supported event type is Office.EventType.RecurrencePatternChanged, which is invoked when the user changes the recurrence pattern of a series.
+         * 
+         * [Api set: Mailbox Preview]
+         *
+         * @remarks
+         *
+         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
+         *
+         * <tr><td>Applicable Outlook mode</td><td>Message Compose</td></tr></table>
+         * 
+         * In addition to this signature, the method also has the following signature:
+         * 
+         * `addHandlerAsync(eventType:EventType, handler: any, callback?: (result: AsyncResult) => void): void;`
+         * 
+         * @param eventType The event that should invoke the handler.
+         * @param handler The function to handle the event. The function must accept a single parameter, which is an object literal. The type property on the parameter will match the eventType parameter passed to addHandlerAsync.
+         * @param options Optional. An object literal that contains one or more of the following properties.
+         *        asyncContext: Developers can provide any object they wish to access in the callback method.
+         * @param callback Optional. When the method completes, the function passed in the callback parameter is called with a single parameter, asyncResult, which is an AsyncResult object.
+         * 
+         * @beta
+         */
+        addHandlerAsync(eventType:EventType, handler: any, options?: any, callback?: (result: AsyncResult) => void): void;
+        /**
+         * Adds an event handler for a supported event.
+         * 
+         * Currently the only supported event type is Office.EventType.RecurrencePatternChanged, which is invoked when the user changes the recurrence pattern of a series.
+         * 
+         * [Api set: Mailbox Preview]
+         *
+         * @remarks
+         *
+         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
+         *
+         * <tr><td>Applicable Outlook mode</td><td>Message Compose</td></tr></table>
+         * 
+         * @param eventType The event that should invoke the handler.
+         * @param handler The function to handle the event. The function must accept a single parameter, which is an object literal. The type property on the parameter will match the eventType parameter passed to addHandlerAsync.
+         * @param callback Optional. When the method completes, the function passed in the callback parameter is called with a single parameter, asyncResult, which is an AsyncResult object.
+         * 
+         * @beta
+         */
+        addHandlerAsync(eventType:EventType, handler: any, callback?: (result: AsyncResult) => void): void;
         /**
          * Adds an Exchange item, such as a message, as an attachment to the message or appointment.
          *
@@ -10560,7 +10461,6 @@ declare namespace Office {
          * @param callback When the method completes, the function passed in the callback parameter is called with a single parameter of type AsyncResult. On success, the attachment identifier will be provided in the asyncResult.value property. If adding the attachment fails, the asyncResult object will contain an Error object that provides a description of the error.
          */
         addItemAttachmentAsync(itemId: any, attachmentName: string, callback: (result: AsyncResult) => void): void;
-
         /**
          * Closes the current item that is being composed
          *
@@ -10647,6 +10547,25 @@ declare namespace Office {
          * @param callback When the method completes, the function passed in the callback parameter is called with a single parameter of type AsyncResult.
          */
         getSelectedDataAsync(coercionType: CoercionType, options: AsyncContextOptions, callback: (result: AsyncResult) => void): void;
+        /**
+         * Asynchronously loads custom properties for this add-in on the selected item.
+         *
+         * Custom properties are stored as key/value pairs on a per-app, per-item basis. This method returns a CustomProperties object in the callback, which provides methods to access the custom properties specific to the current item and the current add-in. Custom properties are not encrypted on the item, so this should not be used as secure storage.
+         *
+         * The custom properties are provided as a CustomProperties object in the asyncResult.value property. This object can be used to get, set, and remove custom properties from the item and save changes to the custom property set back to the server.
+         *
+         * [Api set: Mailbox 1.0]
+         *
+         * @remarks
+         *
+         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
+         *
+         * <tr><td>Applicable Outlook mode</td><td>Message Compose</td></tr></table>
+         *
+         * @param callback When the method completes, the function passed in the callback parameter is called with a single parameter of type AsyncResult.
+         * @param userContext Optional. Developers can provide any object they wish to access in the callback function. This object can be accessed by the asyncResult.asyncContext property in the callback function.
+         */
+        loadCustomPropertiesAsync(callback: (result: AsyncResult) => void, userContext?: any): void;
         /**
          * Removes an attachment from a message or appointment.
          *
@@ -10733,7 +10652,52 @@ declare namespace Office {
          * @param callback Optional. When the method completes, the function passed in the callback parameter is called with a single parameter of type AsyncResult. If removing the attachment fails, the asyncResult.error property will contain an error code with the reason for the failure.
          */
         removeAttachmentAsync(attachmentIndex: string, callback: (result: AsyncResult) => void): void;
-
+        /**
+         * Removes an event handler for a supported event.
+         * 
+         * Currently the only supported event type is Office.EventType.RecurrencePatternChanged, which is invoked when the user changes the recurrence pattern of a series.
+         * 
+         * [Api set: Mailbox Preview]
+         *
+         * @remarks
+         *
+         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
+         *
+         * <tr><td>Applicable Outlook mode</td><td>Message Compose</td></tr></table>
+         * 
+         * In addition to this signature, the method also has the following signature:
+         * 
+         * `removeHandlerAsync(eventType:EventType, handler: any, callback?: (result: AsyncResult) => void): void;`
+         * 
+         * @param eventType The event that should invoke the handler.
+         * @param handler The function to handle the event. The function must accept a single parameter, which is an object literal. The type property on the parameter will match the eventType parameter passed to removeHandlerAsync.
+         * @param options Optional. An object literal that contains one or more of the following properties.
+         *        asyncContext: Developers can provide any object they wish to access in the callback method.
+         * @param callback Optional. When the method completes, the function passed in the callback parameter is called with a single parameter, asyncResult, which is an AsyncResult object.
+         * 
+         * @beta
+         */
+        removeHandlerAsync(eventType:EventType, handler: any, options?: any, callback?: (result: AsyncResult) => void): void;
+        /**
+         * Removes an event handler for a supported event.
+         * 
+         * Currently the only supported event type is Office.EventType.RecurrencePatternChanged, which is invoked when the user changes the recurrence pattern of a series.
+         * 
+         * [Api set: Mailbox Preview]
+         *
+         * @remarks
+         *
+         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
+         *
+         * <tr><td>Applicable Outlook mode</td><td>Message Compose</td></tr></table>
+         * 
+         * @param eventType The event that should invoke the handler.
+         * @param handler The function to handle the event. The function must accept a single parameter, which is an object literal. The type property on the parameter will match the eventType parameter passed to removeHandlerAsync.
+         * @param callback Optional. When the method completes, the function passed in the callback parameter is called with a single parameter, asyncResult, which is an AsyncResult object.
+         * 
+         * @beta
+         */
+        removeHandlerAsync(eventType:EventType, handler: any, callback?: (result: AsyncResult) => void): void;
         /**
          * Asynchronously saves an item.
          *
@@ -10951,6 +10915,33 @@ declare namespace Office {
      * Important: This is an internal Outlook object, not directly exposed through existing interfaces. You should treat this as a mode of Office.context.mailbox.item. Refer to the Object Model pages for more information.
      */
     interface MessageRead extends Message, ItemRead {
+        /**
+         * Gets an array of attachments for the item.
+         *
+         * [Api set: Mailbox 1.0]
+         *
+         * @remarks
+         *
+         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
+         *
+         * <tr><td>Applicable Outlook mode</td><td>Message Read</td></tr></table>
+         * 
+         * Note: Certain types of files are blocked by Outlook due to potential security issues and are therefore not returned. For more information, see {@link https://support.office.com/article/Blocked-attachments-in-Outlook-434752E1-02D3-4E90-9124-8B81E49A8519 | Blocked attachments in Outlook}.
+         *
+         */
+        attachments: AttachmentDetails[];
+        /**
+         * Gets an object that provides methods for manipulating the body of an item.
+         *
+         * [Api set: Mailbox 1.1]
+         *
+         * @remarks
+         *
+         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
+         *
+         * <tr><td>Applicable Outlook mode</td><td>Message Read</td></tr></table>
+         */
+        body: Body;
         /**
          * Provides access to the Cc (carbon copy) recipients of a message. The type of object and level of access depends on the mode of the current item.
          *
@@ -10965,6 +10956,32 @@ declare namespace Office {
          * <tr><td>Applicable Outlook mode</td><td>Message Read</td></tr></table>
          */
         cc: EmailAddressDetails[];
+        /**
+         * Gets the date and time that an item was created. Read mode only.
+         *
+         * [Api set: Mailbox 1.0]
+         *
+         * @remarks
+         *
+         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
+         *
+         * <tr><td>Applicable Outlook mode</td><td>Message Read</td></tr></table>
+         */
+        dateTimeCreated: Date;
+        /**
+         * Gets the date and time that an item was last modified. Read mode only.
+         *
+         * [Api set: Mailbox 1.0]
+         *
+         * @remarks
+         *
+         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
+         *
+         * <tr><td>Applicable Outlook mode</td><td>Message Read</td></tr></table>
+         *
+         * Note: This member is not supported in Outlook for iOS or Outlook for Android.
+         */
+        dateTimeModifed: Date;
         /**
          * Gets the email address of the sender of a message.
          *
@@ -10995,277 +11012,6 @@ declare namespace Office {
          * <tr><td>Applicable Outlook mode</td><td>Message Read</td></tr></table>
          */
         internetMessageId: string;
-        /**
-         * Gets the email address of the sender of an email message.
-         *
-         * The from and sender properties represent the same person unless the message is sent by a delegate. In that case, the from property represents the delegator, and the sender property represents the delegate.
-         *
-         * Note: The recipientType property of the EmailAddressDetails object in the sender property is undefined.
-         *
-         * [Api set: Mailbox 1.0]
-         *
-         * @remarks
-         *
-         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
-         *
-         * <tr><td>Applicable Outlook mode</td><td>Message Read</td></tr></table>
-         */
-        sender: EmailAddressDetails;
-        /**
-         * Provides access to the recipients on the To line of a message. The type of object and level of access depends on the mode of the current item.
-         *
-         * The to property returns an array that contains an EmailAddressDetails object for each recipient listed on the To line of the message. The collection is limited to a maximum of 100 members.
-         *
-         * [Api set: Mailbox 1.0]
-         *
-         * @remarks
-         *
-         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
-         *
-         * <tr><td>Applicable Outlook mode</td><td>Message Read</td></tr></table>
-         */
-        to: EmailAddressDetails[];
-
-        // Repeated Item Fields //
-
-        /**
-         * Gets an object that provides methods for manipulating the body of an item.
-         *
-         * [Api set: Mailbox 1.1]
-         *
-         * @remarks
-         *
-         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
-         *
-         * <tr><td>Applicable Outlook mode</td><td>Message Read</td></tr></table>
-         */
-        body: Body;
-        /**
-         * Gets the date and time that an item was created. Read mode only.
-         *
-         * [Api set: Mailbox 1.0]
-         *
-         * @remarks
-         *
-         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
-         *
-         * <tr><td>Applicable Outlook mode</td><td>Message Read</td></tr></table>
-         */
-        dateTimeCreated: Date;
-        /**
-         * Gets the date and time that an item was last modified. Read mode only.
-         *
-         * [Api set: Mailbox 1.0]
-         *
-         * @remarks
-         *
-         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
-         *
-         * <tr><td>Applicable Outlook mode</td><td>Message Read</td></tr></table>
-         *
-         * Note: This member is not supported in Outlook for iOS or Outlook for Android.
-         */
-        dateTimeModifed: Date;
-        /**
-         * Gets the type of item that an instance represents.
-         *
-         * The itemType property returns one of the ItemType enumeration values, indicating whether the item object instance is a message or an appointment.
-         *
-         * [Api set: Mailbox 1.0]
-         *
-         * @remarks
-         *
-         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
-         *
-         * <tr><td>Applicable Outlook mode</td><td>Message Read</td></tr></table>
-         */
-        itemType: Office.MailboxEnums.ItemType;
-        /**
-         * Gets the notification messages for an item.
-         *
-         * [Api set: Mailbox 1.3]
-         *
-         * @remarks
-         *
-         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
-         *
-         * <tr><td>Applicable Outlook mode</td><td>Compose or read</td></tr></table>
-         */
-        notificationMessages: NotificationMessages;
-
-        /**
-         * Gets the recurrence pattern of an appointment. Gets the recurrence pattern of a meeting request. Read and compose modes for appointment items. Read mode for meeting request items.
-         * 
-         * The recurrence property returns a recurrence object for recurring appointments or meetings requests if an item is a series or an instance in a series. null is returned for single appointments and meeting requests of single appointments. undefined is returned for messages that are not meeting requests.
-         * 
-         * Note: Meeting requests have an itemClass value of IPM.Schedule.Meeting.Request.
-         * 
-         * Note: If the recurrence object is null, this indicates that the object is a single appointment or a meeting request of a single appointment and NOT a part of a series.
-         * 
-         * [Api set: Mailbox Preview]
-         * 
-         * @remarks
-         * 
-         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
-         * 
-         * <tr><td>Applicable Outlook mode</td><td>Message Read</td></tr></table>
-         * 
-         * @beta
-         */
-        recurrence: Recurrence;
-
-        /**
-         * Gets the id of the series that an instance belongs to.
-         * 
-         * In OWA and Outlook, the seriesId returns the Exchange Web Services (EWS) ID of the parent (series) item that this item belongs to. However, in iOS and Android, the seriesId returns the REST ID of the parent item.
-         * 
-         * Note: The identifier returned by the seriesId property is the same as the Exchange Web Services item identifier. The seriesId property is not identical to the Outlook IDs used by the Outlook REST API. Before making REST API calls using this value, it should be converted using Office.context.mailbox.convertToRestId. For more details, see {@link https://docs.microsoft.com/outlook/add-ins/use-rest-api | Use the Outlook REST APIs from an Outlook add-in}.
-         * 
-         * The seriesId property returns null for items that do not have parent items such as single appointments, series items, or meeting requests and returns undefined for any other items that are not meeting requests.
-         * 
-         * [Api set: Mailbox Preview]
-         * 
-         * @remarks
-         * 
-         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
-         * 
-         * <tr><td>Applicable Outlook mode</td><td>Message Read</td></tr></table>
-         * 
-         * @beta
-         */
-        seriesId: string;
-
-        /**
-         * Adds an event handler for a supported event.
-         * 
-         * Currently the only supported event type is Office.EventType.RecurrencePatternChanged, which is invoked when the user changes the recurrence pattern of a series.
-         * 
-         * [Api set: Mailbox Preview]
-         *
-         * @remarks
-         *
-         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
-         *
-         * <tr><td>Applicable Outlook mode</td><td>Message Read</td></tr></table>
-         * 
-         * In addition to this signature, the method also has the following signature:
-         * 
-         * `addHandlerAsync(eventType:EventType, handler: any, callback?: (result: AsyncResult) => void): void;`
-         * 
-         * @param eventType The event that should invoke the handler.
-         * @param handler The function to handle the event. The function must accept a single parameter, which is an object literal. The type property on the parameter will match the eventType parameter passed to addHandlerAsync.
-         * @param options Optional. An object literal that contains one or more of the following properties.
-         *        asyncContext: Developers can provide any object they wish to access in the callback method.
-         * @param callback Optional. When the method completes, the function passed in the callback parameter is called with a single parameter, asyncResult, which is an AsyncResult object.
-         * 
-         * @beta
-         */
-        addHandlerAsync(eventType:EventType, handler: any, options?: any, callback?: (result: AsyncResult) => void): void;
-
-        /**
-         * Adds an event handler for a supported event.
-         * 
-         * Currently the only supported event type is Office.EventType.RecurrencePatternChanged, which is invoked when the user changes the recurrence pattern of a series.
-         * 
-         * [Api set: Mailbox Preview]
-         *
-         * @remarks
-         *
-         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
-         *
-         * <tr><td>Applicable Outlook mode</td><td>Message Read</td></tr></table>
-         * 
-         * @param eventType The event that should invoke the handler.
-         * @param handler The function to handle the event. The function must accept a single parameter, which is an object literal. The type property on the parameter will match the eventType parameter passed to addHandlerAsync.
-         * @param callback Optional. When the method completes, the function passed in the callback parameter is called with a single parameter, asyncResult, which is an AsyncResult object.
-         * 
-         * @beta
-         */
-        addHandlerAsync(eventType:EventType, handler: any, callback?: (result: AsyncResult) => void): void;
-
-       /**
-        * Asynchronously loads custom properties for this add-in on the selected item.
-        *
-        * Custom properties are stored as key/value pairs on a per-app, per-item basis. This method returns a CustomProperties object in the callback, which provides methods to access the custom properties specific to the current item and the current add-in. Custom properties are not encrypted on the item, so this should not be used as secure storage.
-        *
-        * The custom properties are provided as a CustomProperties object in the asyncResult.value property. This object can be used to get, set, and remove custom properties from the item and save changes to the custom property set back to the server.
-        *
-        * [Api set: Mailbox 1.0]
-        *
-        * @remarks
-        *
-        * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
-        *
-        * <tr><td>Applicable Outlook mode</td><td>Message Read</td></tr></table>
-        *
-        * @param callback When the method completes, the function passed in the callback parameter is called with a single parameter of type AsyncResult.
-        * @param userContext Optional. Developers can provide any object they wish to access in the callback function. This object can be accessed by the asyncResult.asyncContext property in the callback function.
-        */
-       loadCustomPropertiesAsync(callback: (result: AsyncResult) => void, userContext?: any): void;
-
-       /**
-        * Removes an event handler for a supported event.
-        * 
-        * Currently the only supported event type is Office.EventType.RecurrencePatternChanged, which is invoked when the user changes the recurrence pattern of a series.
-        * 
-        * [Api set: Mailbox Preview]
-        *
-        * @remarks
-        *
-        * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
-        *
-        * <tr><td>Applicable Outlook mode</td><td>Message Read</td></tr></table>
-        * 
-        * In addition to this signature, the method also has the following signature:
-        * 
-        * `removeHandlerAsync(eventType:EventType, handler: any, callback?: (result: AsyncResult) => void): void;`
-        * 
-        * @param eventType The event that should invoke the handler.
-        * @param handler The function to handle the event. The function must accept a single parameter, which is an object literal. The type property on the parameter will match the eventType parameter passed to removeHandlerAsync.
-        * @param options Optional. An object literal that contains one or more of the following properties.
-        *        asyncContext: Developers can provide any object they wish to access in the callback method.
-        * @param callback Optional. When the method completes, the function passed in the callback parameter is called with a single parameter, asyncResult, which is an AsyncResult object.
-        * 
-        * @beta
-        */
-       removeHandlerAsync(eventType:EventType, handler: any, options?: any, callback?: (result: AsyncResult) => void): void;
-
-       /**
-        * Removes an event handler for a supported event.
-        * 
-        * Currently the only supported event type is Office.EventType.RecurrencePatternChanged, which is invoked when the user changes the recurrence pattern of a series.
-        * 
-        * [Api set: Mailbox Preview]
-        *
-        * @remarks
-        *
-        * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
-        *
-        * <tr><td>Applicable Outlook mode</td><td>Message Read</td></tr></table>
-        * 
-        * @param eventType The event that should invoke the handler.
-        * @param handler The function to handle the event. The function must accept a single parameter, which is an object literal. The type property on the parameter will match the eventType parameter passed to removeHandlerAsync.
-        * @param callback Optional. When the method completes, the function passed in the callback parameter is called with a single parameter, asyncResult, which is an AsyncResult object.
-        * 
-        * @beta
-        */
-       removeHandlerAsync(eventType:EventType, handler: any, callback?: (result: AsyncResult) => void): void;
-
-        /**
-         * Gets an array of attachments for the item.
-         *
-         * [Api set: Mailbox 1.0]
-         *
-         * @remarks
-         *
-         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
-         *
-         * <tr><td>Applicable Outlook mode</td><td>Message Read</td></tr></table>
-         * 
-         * Note: Certain types of files are blocked by Outlook due to potential security issues and are therefore not returned. For more information, see {@link https://support.office.com/article/Blocked-attachments-in-Outlook-434752E1-02D3-4E90-9124-8B81E49A8519 | Blocked attachments in Outlook}.
-         *
-         */
-        attachments: AttachmentDetails[];
         /**
          * Gets the Exchange Web Services item class of the selected item.
          * 
@@ -11317,6 +11063,20 @@ declare namespace Office {
          * <tr><td>Applicable Outlook mode</td><td>Message Read</td></tr></table>
          */
         itemId: string;
+        /**
+         * Gets the type of item that an instance represents.
+         *
+         * The itemType property returns one of the ItemType enumeration values, indicating whether the item object instance is a message or an appointment.
+         *
+         * [Api set: Mailbox 1.0]
+         *
+         * @remarks
+         *
+         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
+         *
+         * <tr><td>Applicable Outlook mode</td><td>Message Read</td></tr></table>
+         */
+        itemType: Office.MailboxEnums.ItemType;
         /**
          * Gets the subject of an item, with all prefixes removed (including RE: and FWD:).
          *
@@ -11331,6 +11091,74 @@ declare namespace Office {
          * <tr><td>Applicable Outlook mode</td><td>Message Read</td></tr></table>
          */
         normalizedSubject: string;
+        /**
+         * Gets the notification messages for an item.
+         *
+         * [Api set: Mailbox 1.3]
+         *
+         * @remarks
+         *
+         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
+         *
+         * <tr><td>Applicable Outlook mode</td><td>Compose or read</td></tr></table>
+         */
+        notificationMessages: NotificationMessages;
+        /**
+         * Gets the recurrence pattern of an appointment. Gets the recurrence pattern of a meeting request. Read and compose modes for appointment items. Read mode for meeting request items.
+         * 
+         * The recurrence property returns a recurrence object for recurring appointments or meetings requests if an item is a series or an instance in a series. null is returned for single appointments and meeting requests of single appointments. undefined is returned for messages that are not meeting requests.
+         * 
+         * Note: Meeting requests have an itemClass value of IPM.Schedule.Meeting.Request.
+         * 
+         * Note: If the recurrence object is null, this indicates that the object is a single appointment or a meeting request of a single appointment and NOT a part of a series.
+         * 
+         * [Api set: Mailbox Preview]
+         * 
+         * @remarks
+         * 
+         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
+         * 
+         * <tr><td>Applicable Outlook mode</td><td>Message Read</td></tr></table>
+         * 
+         * @beta
+         */
+        recurrence: Recurrence;
+        /**
+         * Gets the id of the series that an instance belongs to.
+         * 
+         * In OWA and Outlook, the seriesId returns the Exchange Web Services (EWS) ID of the parent (series) item that this item belongs to. However, in iOS and Android, the seriesId returns the REST ID of the parent item.
+         * 
+         * Note: The identifier returned by the seriesId property is the same as the Exchange Web Services item identifier. The seriesId property is not identical to the Outlook IDs used by the Outlook REST API. Before making REST API calls using this value, it should be converted using Office.context.mailbox.convertToRestId. For more details, see {@link https://docs.microsoft.com/outlook/add-ins/use-rest-api | Use the Outlook REST APIs from an Outlook add-in}.
+         * 
+         * The seriesId property returns null for items that do not have parent items such as single appointments, series items, or meeting requests and returns undefined for any other items that are not meeting requests.
+         * 
+         * [Api set: Mailbox Preview]
+         * 
+         * @remarks
+         * 
+         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
+         * 
+         * <tr><td>Applicable Outlook mode</td><td>Message Read</td></tr></table>
+         * 
+         * @beta
+         */
+        seriesId: string;
+        /**
+         * Gets the email address of the sender of an email message.
+         *
+         * The from and sender properties represent the same person unless the message is sent by a delegate. In that case, the from property represents the delegator, and the sender property represents the delegate.
+         *
+         * Note: The recipientType property of the EmailAddressDetails object in the sender property is undefined.
+         *
+         * [Api set: Mailbox 1.0]
+         *
+         * @remarks
+         *
+         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
+         *
+         * <tr><td>Applicable Outlook mode</td><td>Message Read</td></tr></table>
+         */
+        sender: EmailAddressDetails;
         /**
          * Gets the description that appears in the subject field of an item.
          *
@@ -11347,6 +11175,68 @@ declare namespace Office {
          * <tr><td>Applicable Outlook mode</td><td>Message Read</td></tr></table>
          */
         subject: string;
+        /**
+         * Provides access to the recipients on the To line of a message. The type of object and level of access depends on the mode of the current item.
+         *
+         * The to property returns an array that contains an EmailAddressDetails object for each recipient listed on the To line of the message. The collection is limited to a maximum of 100 members.
+         *
+         * [Api set: Mailbox 1.0]
+         *
+         * @remarks
+         *
+         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
+         *
+         * <tr><td>Applicable Outlook mode</td><td>Message Read</td></tr></table>
+         */
+        to: EmailAddressDetails[];
+
+        /**
+         * Adds an event handler for a supported event.
+         * 
+         * Currently the only supported event type is Office.EventType.RecurrencePatternChanged, which is invoked when the user changes the recurrence pattern of a series.
+         * 
+         * [Api set: Mailbox Preview]
+         *
+         * @remarks
+         *
+         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
+         *
+         * <tr><td>Applicable Outlook mode</td><td>Message Read</td></tr></table>
+         * 
+         * In addition to this signature, the method also has the following signature:
+         * 
+         * `addHandlerAsync(eventType:EventType, handler: any, callback?: (result: AsyncResult) => void): void;`
+         * 
+         * @param eventType The event that should invoke the handler.
+         * @param handler The function to handle the event. The function must accept a single parameter, which is an object literal. The type property on the parameter will match the eventType parameter passed to addHandlerAsync.
+         * @param options Optional. An object literal that contains one or more of the following properties.
+         *        asyncContext: Developers can provide any object they wish to access in the callback method.
+         * @param callback Optional. When the method completes, the function passed in the callback parameter is called with a single parameter, asyncResult, which is an AsyncResult object.
+         * 
+         * @beta
+         */
+        addHandlerAsync(eventType:EventType, handler: any, options?: any, callback?: (result: AsyncResult) => void): void;
+
+        /**
+         * Adds an event handler for a supported event.
+         * 
+         * Currently the only supported event type is Office.EventType.RecurrencePatternChanged, which is invoked when the user changes the recurrence pattern of a series.
+         * 
+         * [Api set: Mailbox Preview]
+         *
+         * @remarks
+         *
+         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
+         *
+         * <tr><td>Applicable Outlook mode</td><td>Message Read</td></tr></table>
+         * 
+         * @param eventType The event that should invoke the handler.
+         * @param handler The function to handle the event. The function must accept a single parameter, which is an object literal. The type property on the parameter will match the eventType parameter passed to addHandlerAsync.
+         * @param callback Optional. When the method completes, the function passed in the callback parameter is called with a single parameter, asyncResult, which is an AsyncResult object.
+         * 
+         * @beta
+         */
+        addHandlerAsync(eventType:EventType, handler: any, callback?: (result: AsyncResult) => void): void;
         /**
          * Displays a reply form that includes the sender and all recipients of the selected message or the organizer and all attendees of the selected appointment.
          *
@@ -11614,6 +11504,71 @@ declare namespace Office {
          * <tr><td>Applicable Outlook mode</td><td>Message Read</td></tr></table>
          */
         getSelectedRegExMatches(): any;
+        /**
+         * Asynchronously loads custom properties for this add-in on the selected item.
+         *
+         * Custom properties are stored as key/value pairs on a per-app, per-item basis. This method returns a CustomProperties object in the callback, which provides methods to access the custom properties specific to the current item and the current add-in. Custom properties are not encrypted on the item, so this should not be used as secure storage.
+         *
+         * The custom properties are provided as a CustomProperties object in the asyncResult.value property. This object can be used to get, set, and remove custom properties from the item and save changes to the custom property set back to the server.
+         *
+         * [Api set: Mailbox 1.0]
+         *
+         * @remarks
+         *
+         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
+         *
+         * <tr><td>Applicable Outlook mode</td><td>Message Read</td></tr></table>
+         *
+         * @param callback When the method completes, the function passed in the callback parameter is called with a single parameter of type AsyncResult.
+         * @param userContext Optional. Developers can provide any object they wish to access in the callback function. This object can be accessed by the asyncResult.asyncContext property in the callback function.
+         */
+        loadCustomPropertiesAsync(callback: (result: AsyncResult) => void, userContext?: any): void;
+        /**
+         * Removes an event handler for a supported event.
+         * 
+         * Currently the only supported event type is Office.EventType.RecurrencePatternChanged, which is invoked when the user changes the recurrence pattern of a series.
+         * 
+         * [Api set: Mailbox Preview]
+         *
+         * @remarks
+         *
+         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
+         *
+         * <tr><td>Applicable Outlook mode</td><td>Message Read</td></tr></table>
+         * 
+         * In addition to this signature, the method also has the following signature:
+         * 
+         * `removeHandlerAsync(eventType:EventType, handler: any, callback?: (result: AsyncResult) => void): void;`
+         * 
+         * @param eventType The event that should invoke the handler.
+         * @param handler The function to handle the event. The function must accept a single parameter, which is an object literal. The type property on the parameter will match the eventType parameter passed to removeHandlerAsync.
+         * @param options Optional. An object literal that contains one or more of the following properties.
+         *        asyncContext: Developers can provide any object they wish to access in the callback method.
+         * @param callback Optional. When the method completes, the function passed in the callback parameter is called with a single parameter, asyncResult, which is an AsyncResult object.
+         * 
+         * @beta
+         */
+        removeHandlerAsync(eventType:EventType, handler: any, options?: any, callback?: (result: AsyncResult) => void): void;
+        /**
+         * Removes an event handler for a supported event.
+         * 
+         * Currently the only supported event type is Office.EventType.RecurrencePatternChanged, which is invoked when the user changes the recurrence pattern of a series.
+         * 
+         * [Api set: Mailbox Preview]
+         *
+         * @remarks
+         *
+         * <table><tr><td>{@link https://docs.microsoft.com/outlook/add-ins/understanding-outlook-add-in-permissions | Minimum permission level}</td><td>ReadItem</td></tr>
+         *
+         * <tr><td>Applicable Outlook mode</td><td>Message Read</td></tr></table>
+         * 
+         * @param eventType The event that should invoke the handler.
+         * @param handler The function to handle the event. The function must accept a single parameter, which is an object literal. The type property on the parameter will match the eventType parameter passed to removeHandlerAsync.
+         * @param callback Optional. When the method completes, the function passed in the callback parameter is called with a single parameter, asyncResult, which is an AsyncResult object.
+         * 
+         * @beta
+         */
+        removeHandlerAsync(eventType:EventType, handler: any, callback?: (result: AsyncResult) => void): void;
     }
 
     /**