Answer
IMAP (Internet Message Access Protocol) is richer in functionality than POP and is designed to allow clients to access and manage mailboxes on the server as if they were local. IMAP is a much more complex protocol than POP, with less client support. IMAP4 is the latest implementation of IMAP.
Although the messages reside on the mail server clients that support IMAP can manipulate these messages in many ways.
IMAP and GMS Webmail also compliment each other. All mail stored in IMAP folders on the server can also be accessed by GMS Webmail which will see identical information, making the combination of IMAP and GMS Webmail ideal for those who spend part of their time in the office and part on the road.
See Also:
Keywords:IMAP mail client