1.Previous
3.Next

can be marked with various status flags (e.g. "deleted" or "answered") and they stay in the repository until explicitly removed by the user--which may not be until a later session. In short: IMAP is designed to permit manipulation of remote mailboxes as if they were local. Depending on the IMAP client implementation and the mail architecture desired by the system manager, the user may save messages directly on the client machine, or save them on the server, or be given the choice of doing either.
* POP provides a completely static view of

1.Previous
3.Next