Compare Outlook add-in support in Outlook on Mac with other Outlook clients
For more information, see Deploy and install Outlook add-ins for testing.
For information about new UI support, see Add-in support in Outlook on new Mac UI.
|Area||Outlook on the web, Windows, and mobile devices||Outlook on Mac|
|Supported versions of office.js||All APIs in Office.js.||All APIs in Office.js.
NOTE: In Outlook on Mac, only build 16.35.308 or later supports saving a meeting. Otherwise, the
|Instances of a recurring appointment series||
|Recipient type of an appointment attendee||Can use EmailAddressDetails.recipientType to identify the recipient type of an attendee.||
|Version string of the client application||The format of the version string returned by diagnostics.hostVersion depends on the actual type of client. For example:
||An example of the version string returned by
|Custom properties of an item||If the network goes down, an add-in can still access cached custom properties.||Because Outlook on Mac does not cache custom properties, if the network goes down, add-ins would not be able to access them.|
|Attachment details||The content type and attachment names in an AttachmentDetails object depend on the type of client:
|String representing the time zone in the
||As an example:
||As an example:
|Time accuracy of
||If an add-in uses the following code, the accuracy is up to a millisecond.
||The accuracy is up to only a second.|
Add-in support in Outlook on new Mac UI
Outlook add-ins are now supported in the new Mac UI (available from Outlook version 16.38.506). For requirement sets currently supported in the new Mac UI, see Outlook API requirement set client support.
To learn more about the new Mac UI, see The new Outlook for Mac.
You can determine which UI version you're on, as follows: