gnubiff is a mail notification program that checks for mail and displays headers when new mail has arrived. gnubiff features include:
* Multiple mailbox support
* pop3, apop, imap4, mh, qmail and mailfile support
* SSL & certificates support
* GNOME support with complete integration to panel
* GTK stand-alone support
* Support for the system tray
* Support for running without GUI or X
* Automatic detection of mailbox format
* Mail header & content display
* IDLE state support for imap4
* FAM support for mh/qmail/mailfile
* PNG animation support
* Highly configurable
* HIG 2.0 compliance
* Small memory usage