This action allows the user to define an HTTP endpoint that will receive an HTTP POST request containing many properties associated with the incoming message.
If a customer sent a message search conspiracy theory from their number 6427000001 to the eTXT platform number, which had processing defined for the search keyword, then parameters included in the HTTP request would be as follows:
These properties can also be used as part of the URL, eg: http://en.wikipedia.org/wiki/$!{args-underscore}, which would be evaluated to http://en.wikipedia.org/wiki/conspiracy_theory