I was listening to a computer forensics podcast while at work today and they were discussing Freenigma. Freenigma is a Firefox extension that allows you to encrypt most webmail emails including GMail, Hotmail, and Yahoo! Mail. It’s by invitation only but you can register for an invitation. This is very similar to FireGPG which I’ve posted about before but FireGPG only works with GMail. Once I get my invite to download Freenigma, I’ll try it out and post my opinion about it.