10 Outlook 2013 Shortcuts Worth Taking
Undo your mistakes easily.
If you didn't know about the Undo command, it's time you heard the good news: When you make a mistake, you can undo it by pressing Ctrl+Z or by clicking the Undo button on the Quick Access toolbar in the upper-left corner of the screen. So feel free to experiment; the worst you'll have to do is undo!
(Of course, it's better if you undo your mistake right away, before you do too many things.)