Txtwire is a service that provides bulk SMS message-sending capabilities. The platform offers a RESTful API that works over HTTPS in JSON format, enabling developers to construct web and mobile applications for communication with voice and SMS messaging to help automate mobile campaigns and alleviate certain functions. With an account token, the API can be used to search and activate a number to use, make calls and send SMS, and/or trigger MP3 files to be played. The Txtwire API rate limits do not allow more than 1 message to be sent per number per second. Txtwire can be used to access numbers across 700 mobile carriers in 190 countries worldwide.
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