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IMAP stands for Interactive Mail Access Protocol and is a popular system for the retrieval of electronic mail messages from a server.
By using IMAP, clients can manipulate their email in many ways such as creating multiple mailboxes and accessing office and public folders too.
The main feature of IMAP however is its ability to notify a client when an e-mail arrives
For this to work the e-mail client must maintain a TCP/IP connection to the IMAP server.
Unlike with POP3, IMAP allows for the retrieval of email from many different devices.
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