Simple if that mail man has a route that includes his house then he delivers his own mail. However that is highly uncommon. Otherwise whichever mail man that has the route that includes his house will deliver his mail. (can be a her as well)
Someone who delivers mail is called a mailman/mail woman or mail carrier.
The U.S. Post Office delivers mail to him. Therefore he is recognized as legitimate in the eyes of the government.
a person who delivers mail
the man/women who delivers your mail
The mailman
A person who delivers mail.
The American use of the term "postman" refers to someone who delivers the mail.
Hedwig, his owl
A smurf that delivers mail
a mail man
A boy who delivers mail
no, each mail person has their own route that is assigned to them by their supervisor.