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This example sets a custom reply-to URL that has an embedded custom ID, smsid with a value of MYUNIQUEID. Such parameters may be useful for integration into existing systems and to generally keep track of custom state variables related to the SMS being sent. The reply-to URL will be stored within the system on the initial request and sent back upon SMS reply for Two-Way accounts. Addition parameters specified in this example use replacement keywords %%TEXT%% and %%FROM%% to get the reply-to SMS text body and replying address respectively for more direct access to data. The reply-to URL is as follows:
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