The three steps are: (1) clone the repo (2) build the server, write config file, run it and (3) "Configure your MX record in your domain registrar to point to your server."<p>That's not 3 steps and that's not nearly enough to self host your email. No mention of authentication(!), SPF, DMARC, spam filtering, backups, IMAP access or many other things that are required to have a mail server in 2023, not even in TODO list.