Yup, came here to say pretty much that. I've been self-hosting email for decades, first from a box on my home network (back when that was possible) and later fr

Yup, came here to say pretty much that. I've been self-hosting email for decades, first from a box on my home network (back when that was possible) and later from a VPS. It's not nearly as hard as folks make it out to be. At the very least, getting your server marked as spam/blacklisted is not inevitable. Just make sure you aren't an open relay and that you've got properly configured SPF and DKIM records in your DNS. Once that's set up you can pretty much forget about it. I haven't had to touch any of my configs in years. Initial setup takes maybe a day or two if you know your way around Linux or one of the BSDs.