The following free software (which I haven't tried yet but which I
linked to from Dontronics site) allows you to "prefilter" downloading
email and delete it before it has loaded based on header contents.
(eg PICLIST ???:-))

May be useful.

http://home2.pacific.net.sg/~thantom/eremove.htm




regards

            Russell McMahon

PS    SP*M is an attempt to stop existing filters removing a possibly
useful message :-)