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IMAP (Internet Message Access Protocol)

IMAP (Internet Message Access Protocol) is a standard email protocol that stores email messages on a mail server, but allows the end user to view and manipulate the messages as though they were stored locally on the end user's computing device(s). This allows users to organize messages into folders, have multiple client applications know which messages have been read, flag messages for urgency or follow-up and save draft messages on the server.

IMAP can be contrasted with another client/server email protocol, Post Office Protocol 3 (POP3). With POP3, mail is saved for the end user in a single mailbox on the server and moved to the end user's device when the mail client opens. While POP3 can be thought of as a "store-and-forward" service, IMAP can be thought of as a remote file server.

Most implementations of IMAP support multiple logins; this allows the end user to simultaneously connect to the email server with different devices. For example, the end user could connect to the mail server with his Outlook iPhone app and his Outlook desktop client at the same time. The details for how to handle multiple connections are not specified by the protocol but are instead left to the developers of the mail client.

Even though IMAP has an authentication mechanism, the authentication process can easily be circumvented by anyone who knows how to steal a password by using a protocol analyzer because the client’s username and password are transmitted as clear text. In an Exchange Server environment, administrators can work around this security flaw by using Secure Sockets Layer (SSL) encryption for IMAP.

This was last updated in February 2016

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Have new iPAD...REQUIRES PASSWORD FOR IMAP and I forgot it. Please allow me to change password for that.
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is a protocol for e-mail retrieval and storage. The Internet Message Access Protocol commonly known as IMAP is an application layer Internet protocol that allows an e-mail client to access e-mail on a remote mail server

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When I open my email a pop-up appears asking for my username and password. I enter both and am told that either entry is incorrect.
I hate this thing - it interferes with my task at hand. How can I get rid of it? I am putting in the correct email and password. Help!
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Me too! The pop up box appears every few seconds and interferes with whatever you are doing. My password is apparently incorrect, but there is no facility for changing it or being reminded what it is. And when I did a way of asking for it, I get a message saying it has been sent to my inbox, but it doesn't appear !
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