mailbox
noun [ C ]
(also mail box) uk/ˈmeɪlbɒks/ us COMMUNICATIONS
a box in an office or outside a person's home where letters are delivered:
Your mailbox is with all the others near the receptionist's desk.
US
→ postbox
IT, COMMUNICATIONS
the part of a computer program that shows on a computer screen where electronic messages are stored:
Look out for our emails in your electronic mailbox.
Check your mailbox tomorrow for the trip details.
See also
inbox