Some secure email providers integrate tools such as Pretty Good Privacy (PGP). This protocol lets you lock the contents of your message and provides a secure key to the intended recipient. That way, the recipient is the only one who’s able to unlock and read your message. If unwanted parties without the key intercepted the message, the contents would be unreadable and look like gibberish. PGP mixes up the contents of an email, so it becomes a puzzle that only you and the recipient can solve using a key. Decrypting the message without the key is impossible. Each person has a public and a private key in the form of a digital code. The public key is stored on a key server and can be accessed by anyone who wants to encrypt and send an email. The private key is stored safe and private on the recipient’s computer, and only that person has access to it.