noun
inbox
IHN-boks
noun
1
The folder in an email or messaging app where new messages arrive.
"She had over two hundred unread emails sitting in her inbox."
2
A physical tray on a desk for papers waiting to be dealt with.
"He dropped the invoice into the inbox on his manager's desk."
verb
1
To send someone a private message, especially on social media.
"Just inbox me the details and I'll sort it out."
How to Use Inbox
Learner’s notesIn plain EnglishWhere new messages or documents land, waiting for you to deal with them.
When to use it
As a verb ("inbox me"), it's informal internet slang.
Common pairings
check your inbox
inbox zero
inbox me
Word Forms
inboxed past tense, inboxes plural, inboxes singular
Study it as flashcards or scroll it in Flow — saved to your collection.
Test yourself on “inbox”
A quick quiz — meaning, synonyms & usage
→
Fill the Gap
Can you complete this real example?
She had over two hundred unread emails sitting in her _____.
Etymology
From in plus box.