Suggest an alternative to

email-oauth2-proxy

An IMAP/POP/SMTP proxy that transparently adds OAuth 2.0 authentication for email clients that don't support this method.

Why do you think that https://github.com/marrow/mailer is a good alternative to email-oauth2-proxy

A URL to the alternative repo (e.g. GitHub, GitLab)

Here you can share your experience with the project you are suggesting or its comparison with email-oauth2-proxy. Optional.

A valid email to send you a verification link when necessary or log in.