I'm interested in creating a service that will receive a text message and based on it's content send a text message back to the original number. I've looked around a little bit but haven't found any good resources for information on how to do this.
Can anyone point me to any good links to find some info on this or recommend what .NET libraries I should investigate first?
I've accomplished that on the cheap in the past by setting up an email server that runs a script when a text message arrives. It arrives as an email since phones can text to email addresses. The "from" part of the email holds the phone number as an email address in a carrier-specific format, so I just sent an email back to that address via standard PHP mail functions and it is delivered to the phone as a text. I wrote that script in PHP, but you could easily do a similar thing on windows with a mail server and a .NET application with standard email functions.