ein protokoll zum abfragen/verwalten von emails - die eindeutig bessere Alternative zu pop, definiert in (rfc:2060)
"IMAP stands for Internet Message Access Protocol. It is a method of accessing electronic mail or bulletin board messages that are kept on a (possibly shared) mail server. In other words, it 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." (http://www.imap.org/)