HSL (Hay Systems Ltd.) SMS provides a messaging gateway that can easily be integrated with other applications to allow them to send and receive SMS. HSL SMS is a versatile service that can be used for emergency alerts, M2M (machine-to-machine) calls, staff communications, customer promotions, two-factor authentication, and more. Integration can be accomplished using a variety of protocols, including REST, SOAP, SMPP, and SMTP.
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