BT offer an SMS SDK that allows you to send and receive texts on from your app. Their pricing is not what I would describe as really competitive, but there is

BT offer an SMS SDK that allows you to send and receive texts on from your app. Their pricing is not what I would describe as really competitive, but there is (or was the last time I checked) a trial account that allowed you to do some small number of operations per day. http://web21c.bt.com/services http://web21c.bt.com/services