Hi Andrew
I like your idea of building a Document Filter using the Preferred Send Method. But it's not an available field. I've pointed that out to Softrak at least a year ago.
I hesitate to recommend PrintBoss for two reasons - 1) the total cost will be at least $1,000 and I can think of many alternate recommendations that would be better ROI for this client. 2) PrintBoss introduces a level of complication that makes printing issues harder to troubleshoot, so the pain has to be significant.
I thought of a better idea myself. Instead of using the Fax Send Method, I'm going to use the Email Send Method. I don't know why I didn't think of that before.
Steve