Snapmail sends self-destructing emails for you
Snapmail is a Chrome extension that adds a button next to Gmail's "send" button that you can use to send self-destructing messages. The button encrypts your message and only sends someone a link to it. Once your recipient follows the link to the message, Snapmail informs the person that it will self-destruct in 60 seconds. And then it does. Right now, Snapmail encrypts only text content.
Get it here.
Does it really work? Did I made a mistake??