I recommend building GPG into Firefox along with FireGPG, and suddenly it gets a hell of a lot easier. I know most people would be looking at the Thunderbird-E

I recommend building GPG into Firefox along with FireGPG, and suddenly it gets a hell of a lot easier. I know most people would be looking at the Thunderbird-Enigmail-GPG route, but I've found Firefox - FireGPG - GPG to be easier to use, install and more usefull. Actually the most difficult part with that setup is getting GPG to play with FireGPG, include GPG with Firefox and suddenly public key encryption is easy and available to the masses.