|No such thing as a small change|
There is an alternative way of doing it by downloading your emails via a proxy when you ask for them from Outlook. So you can read the emails before Outlook takes care of it.
http://popfile.sourceforge.net/ is a very well developed perl spam filter. Reading it is like going to school.
It sits in between your isp email accounts and Outlook or any other email agent (using a proxy port).
It allows anybody to add a module if it follows their clear rules. Read the wiki where it explains those rules. Besides, perhaps you could take advantage of the Bayasian filter to detect the emails that you need to copy to another place.
Installing it in Windows is an example of a good perl 2 exe translation.