What is IMAP?
"The Internet Message Access Protocol (commonly known as IMAP or IMAP4, and previously called Internet Mail Access Protocol, Interactive Mail Access Protocol (RFC 1064), and Interim Mail Access Protocol) is an application layer Internet protocol operating on port 143 that allows a local client to access e-mail on a remote server. The current version, IMAP version 4 revision 1 (IMAP4rev1), is defined by RFC 3501. IMAP4 and POP3 (Post Office Protocol version 3) are the two most prevalent Internet standard protocols for e-mail retrieval. Virtually all modern e-mail clients and servers support both."

More about IMAP at Wikipedia



What are the benefits of IMAP?
Internet Message Access Protocol (IMAP) "permits a client email program to access remote message stores as if they were local. For example, email stored on an IMAP server can be manipulated from a desktop computer at home, a workstation at the office, and a notebook computer while traveling, without the need to transfer messages or files back and forth between these computers."

In other words, IMAP will help keep your information synched across all devices so that whatever you do in one place shows up everywhere else you might access your email. The POP3 protocol just isn’t designed to do that.

More about IMAP at The IMAP Connection



Where can I get an IMAP mail client?


Where can I get an IMAP mail account?
You can get a list of IMAP mail accounts at IMAP Mail