Briefly explain who IMAP works.

What will be an ideal response?

IMAP (Internet Mail Access Protocol) is a more advanced electronic email system. With IMAP, the email remains on the email server and is not downloaded to the user's computer. Mail can be organized into folders on the mail server and read from any computer. IMAP users can work with email while offline. This is accomplished by downloading email onto the local computer without erasing the email on the IMAP server. A user can read and reply to email offline. The next time a connection is established, the new messages are sent and any new email is downloaded. The current version of IMAP is IMAP4.