“Every program attempts to expand until it can read mail. Those programs which cannot so expand are replaced by ones which can.” (See the on-line hacker Jargon File, version 4.3.1, 29 JUN 2001: Zawinski’s Law (http://www.tuxedo.org/~esr/jargon/html/entry/Zawinski's-Law.html).) The NetBeans IDE is no exception. Probably it will not replace your existing mail reader any time soon, but we can showcase how mail messages, including attachments, can be displayed inside the IDE. This chapter will show how to display an IMAP (Internet Message Access Protocol) mail server as a NetBeans filesystem.