About IMAP.
IMAP is an email protocol for organizing, storing and retrieving emails on a remote server. It was developed after POP and is a much more advanced system, one of the main differences being that all the mail is stored on the server so it remains accessible from many different locations. With POP you have to download the mail to your local computer in order to read it and therefore you cannot synchronize your mail across many different machines.It may be more complex than POP but there are still only a few core commands we need to know in order to access our mail on an IMAP server.