spool monitoring and "new mail" notification

[gmf dweezil]

Most MUA's watch a user's mail spool for changes, maybe checking every 30
seconds or something along those lines, and they provide some
notification (e.g. a beep and output of the most-recently-arrived
message's subject line) when new messages arrive.  However, if messages
arriving at the spool are immediately sent to procmail and are then sent
to various folders, the MUA does not know mail has arrived and its
notification feature doesn't work.  Does anybody have a solution that
will at least enable a MUA to spot changes in the spool before procmail
moves the new arrivals?

--=--=--=--=--=--=--=--=--=--=--=--=--=--=--=--=--=--=--=--=--=--=--=--=--

Greg Fall
gmfall engin umich edu, gmf dweezil dyn ml org
http://www-personal.engin.umich.edu/~gmfall