Twilio only hits your URL when somebody sends an SMS to your phone number. So in the #1 scenario, if you sent a message via the REST API, Twilio wouldn't hit y

Twilio only hits your URL when somebody sends an SMS to your phone number. So in the #1 scenario, if you sent a message via the REST API, Twilio wouldn't hit your URL. If the person replied, then your URL would be hit.