Services like ImprovMX will love this. They can make any domain you own and link it to your email account without setup on the mailbox. gandi.net gives you 2 fr

Services like ImprovMX will love this. They can make any domain you own and link it to your email account without setup on the mailbox. gandi.net gives you 2 free inboxes for every domain you own, but the free tier has limited services and size.