We provide a suite of Application Programming Interfaces (APIs) that can easily be integrated into your organisation to enable the sending and receiving of SMS messages. Whether you're adding SMS notifications into a workflow application, SMS alerts to a monitoring system, SMS reminders to an appointment system or controlling equipment remotely (M2M/IoT) then you'll find a suitable SMS API here. Details for each SMS API that we provide can be found below.
Selecting an API: Choosing the API that is best for you depends on three factors: (1) what do you want to do, (2) what does the API do, (3) what language do you wish to use and (4) the available SDKs/libraries. All of the APIs can handle a very high level of messaging and, subject to how your application performs, you will be able to use any of the APIs to send and receive a high volume of messages at a high rate.
Simple or sophisticated: Both the HTTP API and SMTP API for SMS come in two varieties: simple and sophisticated. The sophisticated variety of each API has extensive character set support and is two-way by default. Both varieties of HTTP API will make a callback to a webhook URL that you define, enabling you to receive delivery receipts and inbound SMS.
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