You know that sinking feeling right after hitting the "Send" button, realizing you've made a mistake or sent an email prematurely – we've all been there. Fortunately, Gmail offers a lifeline in the ...

Gmail is one of the best email apps, as long as you change some key settings. Still, it has problems. Outgoing emails are temporarily stored in your Gmail account's Outbox folder before they're sent.

If you use Google's Gmail smartphone app for your mobile email correspondence, keep in mind the Undo Send feature. It's really useful for times when you forget to link a file or notice you misspelled ...