diff --git a/types/office-js-preview/index.d.ts b/types/office-js-preview/index.d.ts
index 4b8f2998cd..777e2ba07d 100644
--- a/types/office-js-preview/index.d.ts
+++ b/types/office-js-preview/index.d.ts
@@ -9393,6 +9393,8 @@ declare namespace Office {
          *
          * A string that can be one of the following values: "Outlook", "OutlookWebApp", "OutlookIOS", or "OutlookAndroid".
          *
+         * **Note**: The "Outlook" value is returned for Outlook on desktop clients (i.e., Windows and Mac).
+         *
          * [Api set: Mailbox 1.0]
          *
          * @remarks
@@ -9403,10 +9405,10 @@ declare namespace Office {
          */
         hostName: string;
         /**
-         * Gets a string that represents the version of either the host application or the Exchange Server.
+         * Gets a string that represents the version of either the host application or the Exchange Server (e.g., "15.0.468.0").
          *
-         * If the mail add-in is running in Outlook client on the desktop or iOS, the hostVersion property returns the version of the host 
-         * application, Outlook. In Outlook on the web, the property returns the version of the Exchange Server. An example is the string "15.0.468.0".
+         * If the mail add-in is running in Outlook on a desktop or mobile client, the hostVersion property returns the version of the host 
+         * application, Outlook. In Outlook on the web, the property returns the version of the Exchange Server.
          *
          * [Api set: Mailbox 1.0]
          *
@@ -14985,11 +14987,12 @@ declare namespace Office {
          * Contains the following members:
          * 
          *  - hostName (string): A string that represents the name of the host application. 
-         * It be one of the following values: "Outlook", "OutlookWebApp", "OutlookIOS", or "OutlookAndroid".
+         * It should be one of the following values: "Outlook", "OutlookWebApp", "OutlookIOS", or "OutlookAndroid".
+         * **Note**: The "Outlook" value is returned for Outlook on desktop clients (i.e., Windows and Mac).
          * 
-         *  - hostVersion (string): A string that represents the version of either the host application or the Exchange Server. 
-         * If the mail add-in is running in Outlook on desktop clients or iOS, the hostVersion property returns the version of the 
-         * host application, Outlook. In Outlook on the web, the property returns the version of the Exchange Server. An example is the string "15.0.468.0".
+         *  - hostVersion (string): A string that represents the version of either the host application or the Exchange Server (e.g., "15.0.468.0"). 
+         * If the mail add-in is running in Outlook on desktop or mobile clients, the hostVersion property returns the version of the 
+         * host application, Outlook. In Outlook on the web, the property returns the version of the Exchange Server.
          * 
          *  - OWAView (MailboxEnums.OWAView or string): An enum (or string literal) that represents the current view of Outlook on the web. 
          * If the host application is not Outlook on the web, then accessing this property results in undefined. 
diff --git a/types/office-js/index.d.ts b/types/office-js/index.d.ts
index 929eb01aba..a399e94489 100644
--- a/types/office-js/index.d.ts
+++ b/types/office-js/index.d.ts
@@ -9208,6 +9208,8 @@ declare namespace Office {
          *
          * A string that can be one of the following values: "Outlook", "OutlookWebApp", "OutlookIOS", or "OutlookAndroid".
          *
+         * **Note**: The "Outlook" value is returned for Outlook on desktop clients (i.e., Windows and Mac).
+         *
          * [Api set: Mailbox 1.0]
          *
          * @remarks
@@ -9218,10 +9220,10 @@ declare namespace Office {
          */
         hostName: string;
         /**
-         * Gets a string that represents the version of either the host application or the Exchange Server.
+         * Gets a string that represents the version of either the host application or the Exchange Server (e.g., "15.0.468.0").
          *
-         * If the mail add-in is running in Outlook client on the desktop or iOS, the hostVersion property returns the version of the host 
-         * application, Outlook. In Outlook on the web, the property returns the version of the Exchange Server. An example is the string "15.0.468.0".
+         * If the mail add-in is running in Outlook on a desktop or mobile client, the hostVersion property returns the version of the host 
+         * application, Outlook. In Outlook on the web, the property returns the version of the Exchange Server.
          *
          * [Api set: Mailbox 1.0]
          *
@@ -14613,11 +14615,12 @@ declare namespace Office {
          * Contains the following members:
          * 
          *  - hostName (string): A string that represents the name of the host application. 
-         * It be one of the following values: "Outlook", "OutlookWebApp", "OutlookIOS", or "OutlookAndroid".
+         * It should be one of the following values: "Outlook", "OutlookWebApp", "OutlookIOS", or "OutlookAndroid".
+         * **Note**: The "Outlook" value is returned for Outlook on desktop clients (i.e., Windows and Mac).
          * 
-         *  - hostVersion (string): A string that represents the version of either the host application or the Exchange Server. 
-         * If the mail add-in is running in Outlook on desktop clients or iOS, the hostVersion property returns the version of the 
-         * host application, Outlook. In Outlook on the web, the property returns the version of the Exchange Server. An example is the string 15.0.468.0.
+         *  - hostVersion (string): A string that represents the version of either the host application or the Exchange Server (e.g., "15.0.468.0"). 
+         * If the mail add-in is running in Outlook on desktop or mobile clients, the hostVersion property returns the version of the 
+         * host application, Outlook. In Outlook on the web, the property returns the version of the Exchange Server.
          * 
          *  - OWAView (MailboxEnums.OWAView or string): An enum (or string literal) that represents the current view of Outlook on the web. 
          * If the host application is not Outlook on the web, then accessing this property results in undefined.