By the way, i managed to create a self-destructing email a few weeks ago and sent it to a friend - I wrote "If you are killed or injured during this mission, the CIA will deny all knowledge of your actions ! This message will self-destruct within 5, 4, 3, 2, 1 seconds !!" - he got one hell of a shock ! It destructed in virtual flames !!!
Unfortunately I forgot to save the gif, so in order to save another one I need to create it again !!!