What is "imap"
IMAP (Internet Message Access Protocol. Translated from English, means "Internet Message Access Protocol") is a protocol for managing superior electronic mail resources to POP3 - protocol that most providers offer to their subscribers.
Messages are stored on the server and the user can have access to their folders and messages on any computer, either by Webmail or by e-mail client. Another advantage of this protocol is the sharing of mailboxes between users who are members of a working group. In addition, it is possible to search for messages directly on the server using keywords.