Want To Unsend That Email? It's Possible...04/05/2009
Almost all of us have sent an email to the wrong person wishing we could undo what we just did. Now you can! With Gmail, you can unsend any mail within 5 seconds of sending. Simply login to your Gmail account and select Settings - Labs - Then select to enable the Unsend Mail feature.
Although this is a great feature, in order to make use of it you must be using a compatible browser. See the list of compatible browsers here.
This is just another great tip brought to you by Certified Hosting!