The Bat!

To use GnuPG with The Bat! no plug-ins are necessary. Just install GnuPG completely, and make sure that the directory in which the GnuPG executables have been installed is in your system's PATH Environment variable.

Whenever you receive a GnuPG encrypted message, you can decrypt it if you have an appropriate private key in your key database.

To decrypt an encrypted e-mail message from The Bat!, use the 'Check OpenPGP signature' command from the 'Tools -> Privacy' menu. If the message is signed, OpenPGP automatically checks the validity of the signature. Note that the decrypted message is NOT stored so you will need to decrypt it this way each time you need to read the message.

Another way is to decrypt  the message into your message base using "Decrypt OpenPGP..." command of the Tools menu. Note that in this case your privacy might be compromised because the message is stored in your message base in clear text so that anybody else with access to your system can read it.

You tell The Bat! which version of GPG/PGP you'll be using via the "Tools -> OpenPGP -> Choose OpenPGP Version" Menu. Select the GPG option.

To decrypt encrypted emails click on the Signature Icon located in the right portion of the Message Header Box in the Preview Pane. A pop-up window will prompt you to enter the passphrase for the key the message was encrypted to.

You can find more detailed instructions on how to configure The Bat! for using GnuPG here: http://www.kcoates.com/thebat_pgpguide.htm.