Its not inputstream. It’s contentStream. This must be placed in the service input variable stack.
The getTransportInfo doesn’t do anything it only says the input variables of the service it’s an info service not one for actual content retrieving.
To actually get something useful out of it one must pass it’s contents to MIME object from there you can extract body part, attachments, etc! This is achieved recurring to the get… functions on the WMPublic MIME folder read the manual (built in functions :)) for further instructions.
Connect (contentStream <-> input [createMIMEData]).
Kaylan I’m complementing your info so that future readers get the problem solved quicker.