Echoing to other's thoughts that hosting a server on your own would probably flag you in spam and just be a very tiresome process. A reasonably good and cheap

Echoing to other's thoughts that hosting a server on your own would probably flag you in spam and just be a very tiresome process. A reasonably good and cheap service I could not recommend enough is https://www.migadu.com https://www.migadu.com . They allow you to use unlimited email domains, storage, addresses with the only limit being on total daily outgoing emails. The mini plan allows 100 outgoing emails a day which is more than sufficient for most of my purposes.