Motorola XPRT :: Spam Filter For Incoming Emails?

I receive my email in Outlook as well as on my XPERT. I set up rules in Outlook to automatically delete incoming spam however the phone seems to display every email without any spam security or filtering. This is to the point now, where reading emails is almost impossible since 80% is spam and completely displayed.

Is there any way to set this phone to filter spam or are there any known outside vendors for an app or anything? (In my perfect world, the phone had a spam filter built-in of course)