I'd love to move my crufty mail setup to something like this but after 15 years of self-hosting, there are many wrinkles and dragons that people rely on (e.g. r

I'd love to move my crufty mail setup to something like this but after 15 years of self-hosting, there are many wrinkles and dragons that people rely on (e.g. rspamd whitelist from iOS notes, IMAP authentication and proxying via Perl+sqlite) which these pre-packaged solutions don't (and probably rightly!) support. But if I was setting up something new, I'd definitely use one.