WHY!
Email was invented a gazillion years ago and it's still a shiit experience to setup on linux. Just give me ONE complete package!!
nooo i need to get postfix, dovecot, spamassassain mailscanner, antivirus, opendmarc, opendkim, dovecot-managesieve dovecot-sieve, roundcube, database, webserver and then i still have to configure everything and setup certs, spf, dnssec, dkimkeys on the domains, domains, mailboxes, deny weak certs etc.

I know the whole do one thing and do that one thing well but how about you just be a mailserver and do that ONE thing well without me needing to putting all of the puzzle pieces together myself! I don't want to waste time setting all this shit up. and don't even get me started on symantec and live.com and their blocking!