Unsend or Edit any email(Gmail) after you sent it.

I recently published an excellent article about Gmail's 'undo send' feature: You can read it through this link
HERE 
Now another service is launched. A service that allows users to unsend or edit sent email & attachments (even after being opened by the recipient) + get open-notifications.
As you're probably aware, Gmail's 'Undo Send' simply delays the email from being sent for up to 30 seconds (with the opportunity to recall within that timeframe). We're....quite different :). The Service is unsend.it. It has many features.

How does it work?

Simply configure your existing email address to be routed through the unSend.it state-of-the-art secure outgoing (smtp) server enabling users full control over their sent email content (including attachments). Users need to set their 'username@unsend.it' address as their new 'from' address in their email client - however, all of your sent emails will show your existing email address as the sender (recipients will NEVER see a 'from unsend.it address').
Users can continue using their regular email client to send email (Gmail, Outlook, Apple Mail, etc)...the only difference is with unSend.it, you'll be in complete control of your sent email.
unSend.it utilizes end-to-end encryption providing the most secure technology in existence today.

unSend.it features include ;

Unsend or edit sent email at any time (even after being opened by the recipient)

Unsend or edit sent attachments at any time (even after being opened by the recipient)

Track when the recipient opens your email (with optional email notifications)

Self-destruct options: enable the message to disappear after being opened by the recipient

To sign up to unsend.it, Click http://unsend.it and you will see a step by step instructions on how to configure your account.
Remember to share with your friends.