I've also been around long enough to know not to try running my own email server anymore... been there, done that (Zimbra & Exchange). While possible, it will consume more of your time than you want.
It's just beyond me why the likes of Google and Microsoft have not come up with a Family plan for bringing your own domain name... one that doesn't cost $5-6+ per month per user.
The point of paying an email service is to make me not have to worry about it anymore. Gmail is free, and Workspace is $6 per user, Fastmail is $5 per user, etc.
If I'm anywhere near $20 monthly, I'd rather pay it to someone to have proper email and no "hacks". I just think it's absurd there is no "family & personal" option for any of these services... particularly Google where they could hoover up everyone's inbox like they already do in Gmail, plus make a few bucks monthly for the privilege of allowing me to use my own domain name.
That's literally all everyone wants here... GMail + Custom Domain Name. Google One should have this an a paid option and support X number of other users you can invite (family members with their own Gmail accounts). Families don't need retention policies, GDPR accreditation, etc.
So... It's artificially gimped for no real reason.
