I've seen this post about "Google blocking all third party email accounts starting in June" boosted quite a bit lately ( https://mastodon.honeypot.im/@digdeeper/108312690706717846 )

Please stop boosting it: the statement is untrue.

Google will continue supporting app passwords ( https://support.google.com/accounts/answer/185833 ). Using them requires two-step verification ( https://support.google.com/accounts/answer/185839 ) which you can set up with any TOTP application, no phone required.

(Citation: I use this with mutt, soon also mbsync/isync + mu4e.)