Feature: Integrate OAuth Authentication for O365 / Exchange Online #1086
Description
Microsoft disabled legacy authentication and push a lot the modern authentication via OAuth.
At the moment with semaphore it is only possible to connect via username/password but not with an OAuth flow.
Therefore I ask for the implementation of OAuth flow as alternative mail send authentication.
This is also related to #880
Guide from Microsoft:
https://learn.microsoft.com/en-us/exchange/client-developer/legacy-protocols/how-to-authenticate-an-imap-pop-smtp-application-by-using-oauth
Kind regards