IMAP - Internet Message Access Protocol Internet Message Access Protocol is the most widely used email retrieval protocol based on the TCP/IP protocol suite. The protocol was developed as an alternative to POP, by a person name 'Mark Crispin' in 1986. At that time POP (Post Office Protocol) was the most popular email retrieval protocol, which deletes e-mails once it downloaded … [Read more...] about What is the Full Form of IMAP ?