A New Email Feature for me

10. Undo Send

We've all been there: you spend half an hour writing a strongly worded letter, hit send, and realize you probably shouldn't have done that. Thankfully,Gmail Labs' Undo Send feature is there to save you from yourself. After sending an email, Gmail will wait a predefined number of seconds (5, 10, 20, or 30, configurable in Gmail's settings) before sending—at any point during which you can hit the "undo" button to take back your mistake. Even if you don't foresee needing it, it's a heck of a lot better thanyanking out your Ethernet cable, so you might as well keep it around just in case.