You use your own domain with fastmail. You can switch to it now, migrate all your gmail to it, set your gmail to forward to it, and if you later decide you hat

You use your own domain with fastmail. You can switch to it now, migrate all your gmail to it, set your gmail to forward to it, and if you later decide you hate it, you can switch to self-hosted by just changing your mx records. Before I went to gmail I was self hosted and I had so much trouble with people not receiving my email because my server wasn't trusted, and me not receiving emails occasionally because my server would occasionally be down or busy. Not to mention the spam filtering was much better on gmail than my own server.