What is POP and IMAP e-mail? POP and IMAP are the most popular internet e-mail standards in use today.
• POP (Post Office Protocol) stores your e-mail on internet web servers. POP3 is a version of POP e-mail that internet service providers (ISPs) typically provide. POP3 e-mail users typically view e-mail from a PC. • IMAP4 (Internet Messaging Access Protocol) retrieves e-mail from an internet server similar to POP. However, IMAP downloads only the message topic until the user acts to open the e-mail on their PC.