I have not (knowingly?) tested the gateway from outside Alteryx. I would not know how to do this either? I know I can send test messages to my phone from outside of Alteryx but that's it. I don't know if this constitutes a test of the gateway because I'm very unclear on how this gateway thing works - are all text messages which are received by my phone processed/filtered/... through this gateway, or is it just a sub-set of messages using one specific way to connect to the phone?