In order for Xink addin to work with Outlook for Mac, User must switch to NEW outlook (Screenshot below)
The add-in does not work on Outlook for Mac "classic UI" or Legacy Outlook for Mac.
This is also documented by Microsoft here.
The Xink add-in minimum requirement set 1.10 and only the "new UI" of Outlook for Mac supports 1.10. (Screenshot below)
![](https://s3.amazonaws.com/cdn.freshdesk.com/data/helpdesk/attachments/production/1122377296/original/TyD8YIjKzomTxnwcfewYWDh3vgXafbg_JA.png?1662003798)