Good luck getting your self hosted email trusted by anybody.

It's trusted by everyone AFAICS - including outlook.com, if that's still a thing

Self-hosted email is trusted? Not in my experience -- maybe I had bad luck and a small sample size but I quickly abandoned it after a few contacts I needed to be able to e-mail didn't get my email. And generally it didn't even go to their spam box -- it was filtered from even getting that far by their provider.

I was using a dedicated VPS, maybe that was part of the issue, maybe self-hosting from a residential IP might work better. But it was easier for me to let iCloud handle my domains email. It's been flawless ever since even though they're not really a big player in e-mail. Used Proton for a bit, that was (almost) flawless as well, though even Proton occasionally gets blocked by stricter corporate rules.

did you do all the things? DMARC and what have you? Super easy in LLM land but wasn't hard even before it.