From what I understand there is no specific phobia for people who are afraid of mail. Most just call it Mail Phobia...
Phobiactic.
a wuss
Insecure
Because they are afraid
a fear or phobia
a big baby
The common term is a mail thief.
nahh
outspoken?
a mail man
Nosophobia, Nosemaphobia or Pathophobia.
Call the police on them