qbiff (1)

in .qmail: |qbiff

qbiff writes a message to your screen whenever a new mail message is delivered, if you ran biff y after logging in.

WARNING: If you create a .qmail file to enable qbiff, make sure to also add a line specifying delivery to your normal mailbox. For example:

     /home/joe/Mailbox

     |qbiff

biff(1), dot-qmail(5)