wmbiff(1) on Linux
The text b06bf2ca4072, as Debian 8 (Jessie), Debian 7 (Wheezy), Debian 6.0 (Squeeze), Debian 5.0 (Lenny), Debian 4.0 (Etch), Debian 3.1 (Sarge) shipped it.
A dockable Mailbox Monitor
Flags it lists
-
-c -
-debug -
-fg -
-font -
-geometry -
-h -
-hi -
-skip-certificate-check -
-v