Oauth2 not supported for custom domaine


I’m tyrying to setup an account on a Google workspace supported mail ie: xxxx@mydomain account using:

How do I add a Google Workspace account? procedure.

At step #6 the : " using oauth2 not supported " Error message is prompted.

When I truy to setup with another account of form xxxx@gmail.com all is going well.

The account : xxxx@mydomain is setup succesfull with Outlook on Android phone and wirh Thunderbird on a Linux pc.

Any help will ne appreciated .
Thanks a lot


Make sure you use imap.gmail.com and smtp.gmail.com as server names.

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A post was split to a new topic: Error when using OAuth2 (Cannot serialize abstract class)

Thanks a lot, IT work now.