Retrieve Accidentally Sent Emails With UnSend.it
Doesn’t it kick in guts when you accidentally send an email to a wrong person or publish a whole private conversation to your company by clicking on reply all button in email client?
UnSend.it claims to help such people by removing all the traces of email that has been sent. The thought of deleting the mistakenly-sent-email might cheer you up but it is not easy to completely “unsend” the sent email.
UnSend.it does so by limiting the type of email you can send with the service. The text you send in emails is irretrievable, however images work in a slightly different way. Images are stored on the server and they are remotely downloaded from a server and can be deleted.
Exploiting this behavior, UnSend.it converts your message into a JPEG image and embed it in the email body. This allows users to delete and edit the sent email by deleting or replacing this JPEG image at the server.
So when the recipient opens up his or her inbox, the latest version of email message stored at the server would be displayed. If the sender has “UnSended” it, the recipient would see no message in the email body or maybe a “Message cannot be displayed” note.
The idea of UnSend.it is great. But there are fundamental problems in their implementation. First, some email servers block messages with images. So the emails may never arrive to the recipient’s inbox even if they are meant for the recipient. Secondly, sending images rather than text give rise to security issues.
Moreover, every message sent with the service carries an advertisement as signature “Regret-Free Emailing”.
If UnSend.it resolves these issues and maybe somehow lets users send text, the service would be much more useful.