@adiz @pwm @ar @49016 @sophie i use it on some casual postfix+dovecot install its really just fine.

i do use a separate alias and mailbox for it though. its supposed to be capable of coexisting but i haven't tried to.

gmail intentionally implements email wrong so i don't really care about criticisms involving that. for example using a standards compliant IMAP client, and moving mail to a folder, gmail will instead tag the mail and lie to the client that it was moved. this leads to an interesting acid test about how clients handle servers that overtly lie to them, as some will treat mail as moved when it isn't (and get confused by the next sync attempt) and others just trust what the server says always and don't make attempts to assume the correct behavior happened (which can itself be confusing as you 'move' mail and it doesn't move.)