Free 256bit AES mail crypto plugin
May 28, 2006They’ve made the one-off registration process quick and easy (you have to wait for an email from them to verify that you are the email address you say you are – happens very quickly but some people forget to go and look for it) and once you’ve registered you can send encrypted email to anyone – ALL YOU NEED IS THE RECIPIENT’S EMAIL ADDRESS.
Source: http://www.it-observer.com/