Gsuite and office365 business essentials lets you do it for around $80 a year, and also gives you online office + storage.

iCloud lets you do it cheaper if you have apple+ or whatever it’s called.

Email services like Runbox and their American counterpart that someone here can probably name. Will let you do it even cheaper.

All of these options have guides on how to do it that I could follow with now knowledge on the stuff.

I have personally used all those options except for the iCloud one. I’m currently using office365, but I’m considering moving to iCloud since we have the Apple+ family thing anyway and it would save me $80 a year. I’ve just been too lazy to make the switch yet. I left runbox for gsuite because I wanted the storage, then left gsuite for office365 because Google made it harder to be a “private” customer on their business plan. The office365 thing is pretty amazing, but again, it’s currently a redundant expenditure for me.