Been hosting my own email in my home with Exchange Server for almost 2 decades. I don’t recommend it unless you have experience and a MSDN account though.

Email used to be easy, but with all the anti spam and trust setup required these days it’s a bit more difficult for the inexperienced. You’re going to need to know DNS, SMTP, certificates, and have a plan for message hygiene (anti spam / anti malware).

That said, if you want to do it and can suffer some issues while you’re learning, go for it. That’s how you get experience. :)