After years of testing, "Undo Send" became an opt-in Gmail feature in 2015; it's now turned on by default and can't be deactivated. Even if it's built-in, you'll still need to know what you're looking ...

Gmail's "Undo Send" feature allows users to cancel emails shortly after sending, preventing mistakes. This guide explains how to use the feature on desktop and mobile, and how to extend the ...

You can save time — and make sure your messages always go out when they’re supposed to — when you schedule email from the Apple Mail app. You can set your mail to deliver at any date or time in the ...