Cool, thanks for getting back to me so quickly.

To clarify, the API/platform supports the following two scenarios:

1) You make an HTTP POST to the SMS resource 2) Twilio automatically sends out a text message, and simultaneously does a GET/POST of your script, and $_REQUEST contains "From", "To", and "Body" keys

AND

1) Your Twilio phone # receives a text message 2) Twilio automatically pings your script, and inside the ping, $_REQUEST contains "From", "To", and "Body" keys. The value of the "To" key is always your Twilio phone number. (Unless you have multiple Twilio #s, I suppose).