WMBiff is an WindowMaker docking utility, that displays the number of read and unread messages in (usually) five mailboxes. You can also define actions to execute on new mail arrival (for example, play a sound file), [auto]fetchmail from a remote server, execute your mail reader with a mouse click, or list subject lines from unread messages.

At this moment, wmbiff supports unix-style, maildir, pop3, APOP, IMAP and IMAPS mailboxes.

It also includes scripts to perform miscellaneous tasks. At the moment, these include a checker for Debian security updates.

wmbiff is similar to the wmmaiload package, but features an LED-style appearance, IMAPS support, and other minor differences.