https://secretlink.org/ - A simple way to send encrypted one time data to people.

It's a no signup way to send encrypted messages to people (think usernames and passwords etc) that includes the time limited decryption key in the email we send to the target user and when the target user views the email, the message is deleted from our system.

This way if the target email gets hacked in the future, the link is useless.

Much better than emailing passwords around the place.

Could turn it into a service, but just haven't gotten around to it.