Definition

A folder in an email or messaging system where messages that are ready to be sent are stored before they are delivered.

Example

I checked my outbox to see if my email had been sent successfully.

Conversation

Have you checked your outbox lately?

No, I haven't looked at it for a while. Why do you ask?

I think you might have some important emails waiting to send in there.

I'll take a look; I don't want to miss anything important!

Synonyms & Antonyms

Root Explanation

Outbox → It is formed from "out-" (meaning outside) and "box" (from Old English "box", meaning a container). The word "outbox" refers to a container for items that are to be sent out or are outside the main area.

Memory Tip

Think of a box that holds items going 'outside' — 'out-' means outside, and 'box' is a container.

Visually Confused Words