Sadly someone flagged the hilarious response "...spamming every online discussion about selfhosting email, [just go with Fastmail, it's greeaaaat!] or like that." before I got back to it.

True fact, many of us do love reading HN and chiming in. We don't mind self hosters at all. Eventually they get sick of it and move their email to Fastmail, or in extreme cases come work for us!

(it took me a good year of being a Fastmail staff member to finally decide to shut down my own self-hosting and just make it a Fastmail Family account... figured if I was going to get paged by my family for the email being broken I might as well be on the clock)