Patent ID: 9226122
Filing Date: 2015-12-29
Classification: H04W

Abstract:
1. A method comprising: receiving, by one or more devices, a text message from a user device; determining, by the one or more devices, based on a presence of one or more keywords in the text message, whether the text message is an opt-in or opt-out message associated with a messaging service hosted by one or more servers; storing, by the one or more devices and when it is determined that the text message is an opt-in or opt-out message, an indication of a subscription state of the user device with respect to the messaging service; modifying, by the one or more devices and when it is determined that the text message is an opt-in or opt-out message, the text message to add a parameter to the text message, the parameter having a first value when the text message is an opt-in message and a second value when the text message is an opt-out message; transmitting, when it is determined that the text message is an opt-in or opt-out message, the modified text message towards the one or more servers; and transmitting, when it is determined that the text message is not an opt-in or opt-out message, an unmodified version of the text message towards the one or more servers.