Will Self Destruct, a free one-time secure web messaging service, allows you to create a one-time secure web page for a recipient.
You can create a secure anonymous email message to a friend or colleague by entering their e-mail address and the message, i.e. sending a password or other sensitive information that you don’t want other people to see.
The recipient will receive an e-mail with a link to a one-time secure web page which they will be able to view once and only once. Once the url has been accessed the message is deleted.
From the Will Self Destruct FAQ:
Q: Okay, so what do I use this for?
A: To be honest with you, were not precisely sure. Here are some ideas:Sending out passwords? it’s much better than your password sitting in someone elses mailbox for eternity, or
Report fraud to your boss or institution, or
Inform authorities about illegal activities, or
Tell employees to stop using the internet for private use, or simply…
Tell someone you love them (why not?)