We are talking about visual filtering ... :-) ... When I am outside the University, I cannot really filter. I am indeed using IMAP protocol on MS Exchange 2003 (not my choice really), which, as you know, does not cope well with KMail (very last version), which is my e-mail client of choice.
Corrado -- license-discuss archive is at http://crynwr.com/cgi-bin/ezmlm-cgi?3