Can 'Contact User' email be sent as private Buddypress message?

Hey gang, I'm encouraged by the forum support here, so I thought I would chip in with a rather optimistic question.

Is it possible to easily customize the classifieds plugin so that when a user clicks on "Contact User" to reply to an ad, it sends a private Buddypress message instead of an external email? Or should I be looking for a developer to accomplish this?

Feel free to assume that everyone accessing the classifieds will have a Buddypress account on the particular site. That's the idea, anyway.