[jjav]

Sad to see all the negativism. To anyone considering it, just run your own email infrastructure and don't let the naysayers put you down. Email is far too critical to let any megacorporation own you on it.

I spend approximately no time at all in maintaining my email infrastructure which I set up around ~10 years ago.

Of all the things I self-host and self-manage, my email server and related parts is the one which requires the least attention and ongoing work, by far. Set up postfix, it'll take some work initially, then it'll chug along forever.