Not really any easy way to do it… What I would do is create a custom pipeline component and resided after the Xml Disassembler. I’d read the email subject property and then either edit it or set the text to another property. It could be as simple as having .net code to check if your Routine XXX exists and set a custom property isRoutine and then all you have to do is filter on isRoutine. Make sense?
All in all, this should only be a few lines of code. Guessing 10 to 20 total.
Make sure you sue the BizTalk Pipeline Wizard. It’s a huge time saver.
Oh, guess you could also do the sample type of thing in a Orchestration. Easer to code, but not the right place to do this I’d say.