obviously not that simple?

Ok why can i not get this service to show up in mail?

The service is:
“The service receives selected documents in mail” – where documents and mail are chosen from the drop downs.
the next action is print word documents.

I’ve restarted the computer and can’t get them to show up either with control click menu or in the Mail → services menu. They are listed in the services preferences menu. What should I be doing, or any suggestions on where to look for more services info.