Supported versions of office.js and Office Add-ins manifest schema Outlook on the web, Windows, and mobile devices The same calls from the add-in to the Office JavaScript API generally work the same way, except for the areas described in the following table.įor more information, see Deploy and install Outlook add-ins for testing.įor information about new UI support, see Add-in support in Outlook on new Mac UI. You can create and run an Outlook add-in the same way in Outlook on Mac as in the other clients, including Outlook on the web, Windows, iOS, and Android, without customizing the JavaScript for each client.