Mail on your domain, with a possible loss of the domain?

Question

Yandex

Another mail began to clog with spam. Unsubscribing from mailing lists and entering addresses in emergency situations does not help much. I decided to register a new one, and only for personal communication, no registrations on dubious sites! But unfortunately all the eye-pleasing and easy-to-remember nicknames are already taken. I decided to start on my domain. But ..
I doubt that my domain will last for several years. Either I’ll sell it, or I’ll give it away, or I’ll kill it on a project located on the domain ..
Actually, the question is: if I link the domain to the mail service (g̶m̶a̶i̶l̶($),mail,yandex), then if I lose access to the domain, or if I sell/donate the domain , whether will be able to select mail?

Answer 1

Naturally, as soon as you lose control over the domain, you lose control over the mailboxes.

Answer 2

You will lose access to the box, of course ..

Answer 3

Don't own the domain => don't own the DNS authoritative zone => don't own the MX records for that domain => don't own the mail for that domain .