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English definition of “outbox”

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outbox

noun [C] uk   /ˈaʊt.bɒks/ us    /-bɑːks/
a place on a computer where copies of email messages that you are going to send are kept US ( UK out tray) a flat, open container on a desk for letters and other documents that have already been dealt with and are waiting to be sent to someone else or put away: The letter is in your outbox.
(Definition of outbox from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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