email-oauth2-proxy

For those of us with Unix-y mail setups the move to OAuth2 can be a bit tricky, but there are now several different programs to help (spurred, I suspect in no small part, by Microsoft/Exchange's stance). The ones I know about are: Email OAuth 2.0 Proxy <https://github.com/simonrob/email-oauth2-proxy>; mailctl <https://github.com/pdobsan/mailctl>; mutt_oauth2.py <https://gitlab.com/muttmua/mutt/-/blob/master/contrib/mutt_o...> (some suggestion that it might not always work these days?); pizauth <https://github.com/ltratt/pizauth>; oauth-helper-office-365 <https://github.com/ahrex/oauth-helper-office-365>. Disclaimer: I wrote pizauth and it's just about to move into the alpha stage.

If you don't have the time or resources to go through this process you can also use this simple proxy of mine, which intercepts the non-OAuth IMAP/SMTP commands and adds OAuth in the background: https://github.com/simonrob/email-oauth2-proxy/

If all you need is IMAP/SMTP you can use this local proxy to continue using the “less secure” app without needing app passwords: https://github.com/simonrob/email-oauth2-proxy