Gmail had recently announced a new feature called the Undo save button, which allowed you to retrack your email within 30 seconds of the it having been sent. Now Gmail has an extention feature called Dmail created by Delicious (an online social bookmarking company) with a tagline that reads ‘Finally sent email has a delete button’.

Dmail is well aware that the concept of re-tracking one’s email isn’t new and has therefore introduced its self-destruct feature, which needs to be installed by the user from the Google Web Browser Extension and for the first time allows you to destroy a sent email [...]