

Start with buying your own domain.
If you are interested, self hosting email has an outdated bad reputation, I have had much more problems with google blocking microsoft email from custom domains than from self hosted emails.
That said, it is still a lot of work. For a hands off system, find a national provider that can use your domain, so you can switch later while retaining your address.




Good point. Though you are of course right, and it will cost money in perpetuity, I think it is important to distinguish between locations and which top level domain one buys under. At least where I live, I have government guaranteed rights regarding switching registrars and keeping my domain, and a court is needed (or lack of payment) to force me to abandon my domains. That way I avoid the problem of vendor lockinn.