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| POP/POP3 -
(Post Office Protocol) - A mail protocol that leaves the user's email on the server until he or she connects to the server and downloads it to the local machine. Whereas SMTP describes the way email is transferred from server to server, POP describes the method in which the email client communicates with the email server.
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| Public Key Cryptography -
This form of encryption uses two parts. The public key is used for encryption exclusively for the recipient while the private key is known only to the recipient and is used for decryption. This technology is used in OpenPGP email messages to encrypt email.
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