SMSGatewayCenter Developer API Documentation
Welcome to SMSGatewayCenter’s Developer Hub! This comprehensive guide empowers you to integrate robust messaging into your applications with our powerful Developer APIs: SMS API, WhatsApp Business API, Voice Call API, and Two-Way SMS API. Whether you’re sending notifications, OTPs, marketing messages, voice alerts, or enabling two-way communication, our developer-friendly documentation and sample code in PHP, Java, C#, and Python make it seamless. Built on our reliable SMS gateway, these APIs offer secure, scalable solutions for businesses in India and beyond. Dive in and enhance your communication today!
Why Choose Our APIs?
We offer different kind of APIs, you can view the knowledgebase article at Developer API types for all our messaging channels.
- Effortless Messaging: Send and receive SMS, WhatsApp, and voice messages with ease.
- Flexible Integration: Use RESTful endpoints or SMPP for SMS, tailored to your needs.
- Developer-Friendly: Clear endpoints, request/response formats, and multi-language samples.
- Secure & Reliable: Industry-standard encryption and direct operator connections.
- Personalized: Craft custom messages to boost engagement across all APIs.
- Diverse API Options: We offer a variety of API types for our messaging channels, which you can explore in detail in our Knowledge Base article on Developer API Types.
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Our API Offerings (Channels)
SMS API
Programmatically send bulk or single SMS with our SMS API. Integrate via HTTP or SMPP for notifications, alerts, or 2FA codes. Enjoy Unicode support and delivery reports—check our SMS API documentation for examples in PHP, Java, and more.
WhatsApp Business API
Connect with customers on WhatsApp using our WhatsApp Business API. Send alerts, run chatbots, or share rich media securely. Our WhatsApp Business API documentation offers setup guides and scripts to start fast.
Voice Call API
Automate voice messages for reminders or alerts with our Voice Call API. Customize and scale globally—our Voice API docs provide code samples in multiple languages for quick integration.
Two-Way SMS API
Enable two-way SMS for support or surveys with our Two-Way SMS API. Send and receive messages easily—our Two-Way SMS API docs include step-by-step guides to link your app to our SMS gateway.
Get Started with SMSGatewayCenter APIs
Follow these steps to integrate our APIs:
- Sign Up: Create your free account at unify.smsgateway.center/signup/.
- Authenticate: Use Basic Auth or Bearer Token (API key) for secure requests—details in docs.
- Explore Endpoints: Check endpoints, methods, and parameters in our documentation.
- Send Messages: Specify recipients, content, and settings to send SMS, WhatsApp, or voice messages.
- Receive Replies: Set up webhooks for two-way SMS or WhatsApp responses.
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API Documentation Structure
Our documentation is designed for easy navigation:
- Endpoints: Detailed lists with usage examples.
- Request/Response: Clear formats for all APIs (SMS, WhatsApp, Voice, Two-Way).
- Code Samples: PHP, Java, C#, Python examples to accelerate integration.
- Authentication: Basic Auth or Bearer Token setup instructions.
- Rate Limits: Guidelines to optimize usage without interruptions.
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Additional Resources
Need more? Check our SMPP connectivity guide for advanced SMS options, or explore SMS types at SMS Types. Our support team is here 24/7—call +91-9619 141 191 or chat live.
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Testimonials
Why do Great Businesses Trust SMS Gateway Center?
We have tied up with other SMS providers also, but SMS GatewayCenter is quite good. Good Service from the team. We are very happy with the service be it accounts related or technical issue. We always get good response.
INOX Air Products
2018-02-09
We have an excellent experience with SMS Gateway Center. The services and support has been of very high standard.
I’ve been using SMSGatewayCenter’s bulk SMS and WhatsApp services since early 2022 for my small business, and the experience has been fantastic. The platform is intuitive, and the message delivery is incredibly reliable, reaching my customers without fail. The 24/7 support team is quick to assist, and the cost-effectiveness is a big plus. It’s transformed how I connect with my audience, and I highly recommend it to other entrepreneurs! (Google Revirews)
We’ve been using your bulk SMS services for a few months, and the results have been phenomenal. The open rates and customer engagement have gone through the roof. Highly recommend for any business looking to scale fast! (Google Revirews)
I’m Vedanth Gowda, leading a finance business, and I’ve been leveraging SMSGatewayCenter’s bulk SMS and WhatsApp tools —absolutely transformative! The platform’s speed and precision in delivering financial alerts to my clients are unmatched, giving me a competitive edge. Samrat’s expertise in tailoring notification workflows for market updates was a standout, and the robust security features instilled trust. The affordable pricing and proactive support team make it a no-brainer. Perfect for finance pros aiming to elevate client trust and efficiency! (Google Revirews)
Naval Bhatnagar
2025-04-12
From day one, the team at SMS GATEWAY CENTER guided us through setup, testing, and launching campaigns. Their support is A+. Whether you’re new to SMS marketing or experienced, they make it smooth. Thank you Aakash. (Google Revirews)
