qmail had a shitty license, but it was the shit till world moved on and it went unmaintained. And still probably nobody offers even the obvious basic TLS IPv6 LDAP DKIM etc single clean patch. So people just use postfix.
It's not aoki's but cazabon's getmail, it and fdm are junk, at least if until they do TLS and fingerprints right. Maybe they do now. neomutt is notmuch. mpop is only pop3, not imap. > https://marmaro.de/prog/mmh > mailagent.sf.net
