See this earlier post of mine [3], reproduced here for clarity: This changed sometime in 2014. You used to be able to use IMAP authtype 'simple', but in April

See this earlier post of mine [3], reproduced here for clarity: This changed sometime in 2014. You used to be able to use IMAP authtype 'simple', but in April 2014, Google released a rather vague blog post [1] about how they're going to deprecate something; please move to OAuth 2.0. The Thunderbird team's bug tracker has some context [2] where they had to move quickly to add functionality to Thunderbird to support the SASL XOAUTH2 for IMAP so that Thunderbird would keep working with Gmail. [1] https://security.googleblog.com/2014/04/new-security-measure.. https://security.googleblog.com/2014/04/new-security-measure.... [2] https://bugzilla.mozilla.org/show_bug.cgi?id=1059100 https://bugzilla.mozilla.org/show_bug.cgi?id=1059100 [3] https://news.ycombinator.com/item?id=12395631 https://news.ycombinator.com/item?id=12395631