Cube,
Depending on how your solution works, one way may be to use the Capture Conditions. It would check for values in fields of a specific name, and would redirect the output to the proper branch. So let's say the form you want to email has a Capture field called "MyField", you could then make a condition to look for ink in the field "MyField". If there's ink in it, it will go to the True branch. If not, or if the field "MyField" doesn't exists, it will go to the False branch. You can then do what you need to do in the various branches.
You can find more information about the Capture Conditions here:
http://help.objectiflune.com/en/planetpress-workflow-user-guide/CaptureCondition.htmlNote that this will only work if there's a way to differentiate the various jobs based on the Capture Fields. If the forms are identical, and there's no way to know which one does what, then you'll have to either continue to manually change the folder, or use more than one pen. (one pen for one form, another pen for another form)
Regards,
Raphaël Lalonde Lefebvre