A-Lock - 4.5 

Type or receive Eudora, Netscape, Microsoft, cc:mail, ICQ, Hotmail, DejaNews,and much more. Mail the message as usual, then click the A-LOCK icon on your computer tray to automatically encrypt or decrypt. A-LOCK blocks snooping on shared and portable computers or while on the Internet is in use. A-LOCK is easy to use, with just one mouse click, and it displays the decrypted message in a private window while leaving the original message encrypted. A-LOCK includes a lockable password book with an option to specify a default encrypted password.

Codex - 7.96 

An easy to use program that can secure your e-mail from prying eyes. Type in the message you would like to encrypt and then just click the button and finish.

ControlMail - 1.0 

ControlMail is an all in one product that allows the user to encrypt documents and attach security rights. A built in Richtext editor and E-mail facility is provided. The primary use of the ControlMail is to allow the sender to control how a recipient handles his informat