I’ve been happy with Fastmail.

The cost isn’t too bad at $5/mo per user.

The wildcard email thing is cool. You can use addresses like [email protected] to hand out to companies on the fly.

I may go back to hosting my own, but I have no complaints with Fastmail at all.

Upvote just for sharing the same twisted path as me.

Instead of four hours, this could have taken half an hour by properly exploring the problem and mapping out a solution first. Everyone seems to shit on drawing up an architecture first and wants to immediately start coding, but taking a little time up front to think through the problem pays huge dividends in the long run.