Bulk SMS API Integration Service
Connect your website, application, or business system to iSMS using our SMS API — send, receive, and track SMS messages programmatically via HTTP/HTTPS.
What is SMS API Integration?
iSMS provides a fully documented SMS API (Application Programming Interface) that allows developers and businesses to integrate bulk SMS capabilities directly into their own software, websites, ERP systems, or mobile applications. Once integrated, your system can send, receive, and track SMS messages automatically without logging into the iSMS portal manually.
The iSMS API connects via HTTP/HTTPS, making it straightforward to integrate with virtually any platform or programming language. iSMS operates on a prepaid credit model — you pay only for what you send, with no setup fee or monthly subscription.
⚠️ IP whitelist required: every API request must come from a whitelisted server IP. Email
[email protected] to whitelist yours before your first call, or requests are rejected with
-1003.
📋 Integration pricing: SMS integration assistance is available on a quotation basis depending on your requirements. Contact our team at
[email protected] to discuss your needs.
How It Can Help Your Business
✓ Improve productivity
✓ Real-time SMS alerts
✓ Automate customer communication
✓ OTP & 2FA authentication
✓ JSON API — 50 recipients per call
✓ Delivery tracking
⚙️ API Features
- Real-time message status reporting & delivery callbacks
- Two-way SMS (shortcodes & long numbers)
- Per-recipient personalised messages (JSON API)
- Secure HTTPS gateway
- Personalised SMS (mail merge)
- OTP / TAC message support
🛠️ API Supports
- Full API documentation
- Code samples — PHP, Node.js, Java, C#, VB.net, ASP, ASP.NET, C++
- HTTP/HTTPS API
- REST API reference
- SMPP gateway
- Technical support from our team
Supported Languages & Platforms
iSMS provides code samples and documentation for the most common development environments:
View all API resources and developer guides →