I had a free google workspace for over a decade with a domain I own before it became a paid service, I’m looking at putting it all in my hands ideally using services that cost less than the $15/Month in paying for a handful of accounts.

I’m looking at running a Nextcloud to replace most of the Google services but I still haven’t found an email server replacement. Any ideas/suggestions/links to guides?

Edit: I’m not necessarily looking to host my own email, as I understand it to be a pain, but looking to migrate my current one to somewhere else.