You don't have to self-host it, you can point it to an email provider (Gmail, Fastmail, Zoho...) and let them do the hosting for you. If they ban you (like Google likes to do), just point to another service and keep your email address (and therefore access to other services).

I work as a sysadmin and I don't want to bother with self-hosting my own email. I happily pay someone else to do that for me.