delwhjr wrote:
The IMAP is the protocol used by your email account to send/receive mail. This protocol allows for the messages to stay on the server after being read to recall at a later time if needed.
The big benefit of IMAP, is that all of your folders can live on the server and then you can access all of your mail from any device !
The other common protocol is POP. With POP, as soon as you are logged in, all of your new mail is downloaded to that device. On a device like a phone, you can eat up storage space quickly.