A new message filter won't work because the X-PMFlags header does not exist until the message is read.  To verify this, right click on a new, unread message and select "Message headers".  You won't see an X-PMFlags header.  Open the message then check the headers again and the X-PMFlags header will now be there.  It's purpose is to maintain the message flags (e.g. has been read, has been forwarded, color). 

Consider using a spam filter that can be trained to detect these messages.  Spamhalter is built in to Pegasus Mail so would be the logical choice.

I have been getting BOMBARDED by mails about some stocks which have nothing in common other that the fact that they are supposedly stock tips.  The content is always different as are the headers, IP numbers, sender, etc.

The ONLY thing they have in common is that the X-PMFLAGS number in the headers always begins with the same set of numbers (i.e. 34078848 0 1 P175D837.CNM).  From the 0 1....they change.

 My question is, is there a way to filter on just the first set of numbers so I can have Pegasus simply delete them?

I've searched and searched for something else they have in common but EVERYTHING else always changes except the first set of numbers in the X-PMFLAGS.  I've tried every filter I can to make this work but it just continues and it's driving me crazy!

Can anyone help me with this problem?

In advance, thanks!