[kawemi]

I host my own email and most of the time I don't encounter any technical problems: I got rejected once (last week) since I started last year. Most of my problems have been trying to tell/have people read my non "@gmail/outlook/yahoo" domain! Probably depends on how you use your email, but it's been smooth pretty smooth sailing personally.

IIRC, you avoid most of the problems if you set up your DNS accordingly (DMARC, SPF, etc). But for a mailing list AWS SES is probably the way to go to avoid all the trouble.