I've configured Messaging per the online walkthrough. Although it doesn't seem to allow new converations (based upon subject to start (IOW I start conversation 1 'Test Message 11' & conversation 2 'Test Message 12' happens in the same thread).
WHat I would like to do is related messages to posts within custom post types. For example: within a post in a CPT 'test' a logged in user could open a new message to discuss the post. It would append to the bottom of the post and the message content would visible only to people who view/participate in that post. If that user opens another post/CPT they can start a fresh message about it.
Is this possible or do you suggest an alternative method?