SMS API (Transactional, Promotional, OTP)
NobleStack's SMS API delivers transactional, promotional, and OTP messages to your customers reliably and at scale. With a single integration you get high-throughput sending, real-time delivery tracking, and built-in DLT compliance — so your messages land on time, every time.
Transactional
Alerts, confirmations, notifications
Promotional
Offers, campaigns, announcements
OTP
High-speed delivery, priority routing
One API for every SMS need
From one-time passwords that must arrive in seconds to promotional blasts that reach millions, our SMS API is built for speed and reliability. Intelligent routing across trusted operator connections keeps delivery rates high, while a simple REST interface makes integration into any app or CRM straightforward.
Features and capabilities
- Transactional SMS for alerts, confirmations, and notifications
- Promotional SMS for offers, campaigns, and announcements
- High-speed OTP delivery with priority routing
- Unicode and regional-language messaging for wider reach
- Real-time delivery receipts and detailed reporting dashboards
- Scheduled sending, throttling, and personalised template support
- Two-way SMS with long and short codes for interactive campaigns
- Robust REST API with SDKs, plus SMPP for high-volume senders
Built-in India compliance
Navigating TRAI regulations is complex — we make it simple. NobleStack helps you register on the DLT platform, get sender IDs (headers) and content templates approved, and stay compliant with promotional and transactional messaging rules, so your campaigns run without delivery blocks or penalties.
Ideal for
- E-commerce order, shipping, and delivery updates
- Banking and fintech OTPs and account alerts
- Healthcare appointment and prescription reminders
- Retail and D2C promotional offers and loyalty messaging