PGP stands for Pretty Good Privacy. Since PGP is no longer actively supported, I recommend using GNU Privacy Guard (GPG), a freely available open-source replacement.

GPG uses the principle known as public key cryptography. It works well for confidential email. With GPG and my public key you can encrypt a message. Then only I will be able to decode it with my private key (aka secret key).

Download my public key (1.7 kb).

-----BEGIN PGP PUBLIC KEY BLOCK-----
Version: GnuPG v1.2.4 (GNU/Linux)
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=UgFA
-----END PGP PUBLIC KEY BLOCK-----