gpg4usb v0.3.3-1

gpg4usb is a text-editor with a GnuPG-frontend to write, encrypt and decrypt your text-messages and files

Almost the only thing required is an available usb-port you are allowed to access. Simply execute the binary on your usb-pendrive and start typing e.g. the Mailtext you want to be encrypted. If you're done, choose the right gpg/pgp-key for the person you are writing to and hit the encrypt-icon at the top of the application-window.

The resulting encrypted text you can save as a text-file to send it as mail-attachment, or copy it directly into your mail-user-agent or webmail-website. To make sure, you can read this message by yourself afterwards, encrypt it for the recipient and to yourself at the same time - if you want, you can mark as much keys as you want to encrypt for.