HotCrypt

From Dariusz Lowicki:

HotCrypt offers a very convenient way to secure your e-mail messages: Edit or view a message with your favorite e-mail program as usual - and just press a "hotkey" (Ctrl+E by default) to encrypt or decrypt the message.

Features include:

• • Works with all leading e-mail programs ...and text editors
  • Silently runs in the system tray, coming to front only when needed
  • Secure encryption algorithm (Blowfish) with encryption key length up to 448 bits
  • Received (and sent) messages stay encrypted in your email client so only you can read them - even if other users have access to your computer
  • Password management system
  • Non-English character sets supported