JavaScript Object Notation, the lightweight data format most commonly used for messaging APIs and webhook payloads.
Why JSON Matters
APIs and webhooks need a format both machines and developers can read. JSON is text, compact, and supported natively in nearly every language, which is why it became the default for sending a message request or receiving a delivery update.
How JSON Works
Data is written as key and value pairs inside braces, with arrays in square brackets, for example a recipient number, a message body and a sender ID. Values can be strings, numbers, booleans, nested objects or arrays. A request carries JSON in its body, and the response comes back the same way.
How SMPPCenter Uses This
SMPPCenter's REST API accepts and returns JSON, and webhook callbacks for delivery receipts and inbound replies are delivered as JSON payloads your system can parse directly.
Related Terms
FAQ
Frequently Asked Questions
Client Feedback
What Our Clients Say
Our clients run regulated, high-volume messaging infrastructure and prefer not to be named publicly. These testimonials are shared with permission while keeping commercially sensitive details confidential.
We evaluated several messaging platforms before selecting SMPP Center. The deployment flexibility and API capabilities matched our enterprise requirements.
The platform has been reliable for business-critical messaging. Multi-connection support and detailed logging have made daily operations much easier.
Excellent documentation, responsive technical support, and an enterprise-grade platform that scales as our business grows.
We needed complete control over our messaging infrastructure instead of relying on a hosted provider. The platform has delivered excellent performance and reliability.
Names and company details are withheld at our clients' request. This is common among telecom providers, SMS aggregators, fintech companies, and enterprises that consider their messaging infrastructure commercially sensitive.