From Longman Dictionary of Contemporary Englishinboxin‧box, in box /ˈɪnbɒks $ -bɑːks/ ●●○ noun [countable] 1 the place in a computer email program where new messages arrive I had 130 emails in my inbox this morning.2 American English a container on an office desk that is used to hold letters, documents etc that you must deal with SYN in tray British English → outboxFrom Longman Business Dictionaryinboxin‧box /ˈɪnbɒks-bɑːks/ noun [countable]1COMPUTING the place on a computer where new email messages arriveAn email filter will stop your inbox from filling up with spam.2American EnglishOFFICE a flat container used to hold letters, papers etc that need to be dealt withSYNin-tray BrE → compare outbox
