POP3 full form for “Post Office Protocol 3“. Post Office Protocol (POP3) is a simple type of internet protocol that uses in the computer network to access all e-mails from the mail server side by User terminal machine.POP protocol uses in the application layer protocol, and it delivers best ability to fetch and receive all email by users. POP (Post Office Protocol) has two versions first is POP2 and other latest is POP3. POP2 has to need SMTP (Simple Mail Transfer Protocol) to push emails, bu...