Very handy tool like pgp, but much smaller, and it's freeware for personal use:
Crypto Anywhere is secure email on the move ! Crypto Anywhere is small enough to fit on a single floppy or USB key chain drive and so easy to use your grandma will be using it. Don't have a computer yourself but want to protect your web based e-mail at your local internet cafe ? Crypto Anywhere is for you ! If you suspect your employer is reading your private email, put an end to that. If you run Crypto Anywhere from a floppy disk or USB drive, you can encrypt your email without even installing software on your workstation. With Crypto Anywhere you can send and receive secure mail to and from anyone with an email account - the recipients do not have to be 'crypto savvy' or even have Crypto Anywhere themselves. Crypto Anywhere implements trusted, industry standard, strong encryption algorithms based on RSA public key encryption, the Twofish block cipher and the ISAAC random number generator. Crypto Anywhere e-mail is compatible with SecExMail client based and SecExMail Gate server based encryption.
Link: http://www.mofunzone.com/downloadsoftware/...000036766.shtml
