a boxlike tray, basket, or the like, as on a desk, for holding incoming mail, messages, or work.
Computers. a folder for receiving and storing incoming e-mails or text messages.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for in-box
Contemporary Examples of in-box
Yesterday morning, my in-box was stuffed to the gunwales with alarming messages alerting me to…to what?Hooray for Liberal Fear-Mongering!
October 28, 2014