SpringEdge is a trusted bulk SMS service provider and RCS messaging company based in India. Thousands of businesses use our RESTful API to send transactional SMS, OTP codes, promotional campaigns, and interactive RCS messages across all Indian telecom networks and 85+ countries.
The platform handles DLT registration, sender ID management, DND filtering, and telecom compliance automatically — so developers can add messaging to any application with a single HTTP request.
Sub-5ms API Response
RESTful API with real-time delivery reports and webhook callbacks
DLT-Registered Platform
Template approval workflows and full TRAI compliance built in
85+ Countries Covered
Intelligent routing across Indian operators and international networks
99.99% API Uptime
Carrier-grade infrastructure processing billions of messages annually
TRANSACTIONAL SMS
OTP Verification & Transactional Alerts
Secure your user accounts with one-time passwords delivered in under 3 seconds. Our OTP API handles generation, delivery, and verification — with automatic retries and fallback channels to ensure every code reaches its destination.
Send order confirmations, shipping updates, payment receipts, appointment reminders, and account notifications. DLT-compliant templates ensure seamless delivery across all Indian telecom operators.
Advanced Features for Scalable SMS Messaging
Intelligent SMS Routing
AI-powered routing selects the optimal delivery path for every message — maximizing speed, minimizing cost, and ensuring the highest delivery rates.
2-Way Messaging
Enable customers to reply directly to your messages. Collect feedback, process keyword commands, and build interactive conversations over SMS.
Campaign Scheduling
Schedule campaigns for the perfect delivery window. Set timezone-aware schedules, recurring messages, and drip sequences that run on autopilot.
Link Shortening & Tracking
Automatically shorten URLs in your messages and track every click. Measure campaign performance with detailed click-through analytics.
Multi-Language Support
Send messages in any language including Hindi, Arabic, Chinese, and regional scripts. Full Unicode support for global communication.
Personalized Messaging
Dynamic templates with custom variables — insert names, order IDs, amounts, and dates to make every message feel personal and relevant.
CRM Integrations
Pre-built connectors for Salesforce, HubSpot, Zoho, and more. Trigger messages from CRM events without writing any code.
Pay-as-You-Go Billing
No monthly commitments or minimum volumes. Pay only for the messages you send, with volume discounts as you scale up.
NEXT-GEN MESSAGING
Rich Communication Services - The RCS Messaging
RCS (Rich Communication Services) replaces plain-text SMS with branded, interactive messages delivered natively through the phone's default messaging app. Businesses can send product carousels, images, action buttons, suggested replies, and verified sender profiles — without requiring customers to install any app.
Every RCS message includes automatic SMS fallback. If the recipient's device or carrier does not support RCS, the message is delivered as a standard SMS instead — ensuring 100% reachability with zero additional configuration.
Frequently Asked Questions
Common questions about bulk SMS services, RCS messaging, and DLT compliance in India.
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What is bulk SMS and how does it work in India?
Bulk SMS is the process of sending a large volume of text messages to multiple mobile numbers simultaneously through an SMS API or web-based platform. In India, bulk SMS is governed by TRAI (Telecom Regulatory Authority of India) regulations and requires DLT registration. Messages are classified as either transactional (alerts, OTPs, and notifications delivered 24/7 including to DND numbers) or promotional (marketing messages sent between 9 AM and 9 PM). SpringEdge is one of the leading bulk SMS service providers in India, supporting both types with DLT-compliant delivery across all Indian telecom operators, real-time delivery reports, and 99.99% uptime.
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What is the difference between transactional SMS and promotional SMS?
Transactional SMS are informational messages triggered by a user action — such as OTP verification codes, order confirmations, shipping updates, payment alerts, and appointment reminders. They can be delivered 24/7, including to DND (Do Not Disturb) registered numbers. Promotional SMS are marketing messages used for offers, discounts, product launches, and campaigns. As per TRAI regulations, promotional SMS can only be sent between 9 AM and 9 PM and are filtered against the NDNC (National Do Not Call) registry. Both types require approved DLT templates before sending.
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Is DLT registration mandatory for sending SMS in India?
Yes, DLT (Distributed Ledger Technology) registration is mandatory for every business that sends SMS in India, as mandated by TRAI. You need to register as a Principal Entity on any one DLT platform — Jio TrueConnect, Airtel, Vodafone Idea (Vilpower), or Smartping. During registration you will submit your company KYC, register your Sender IDs (Headers), and get your message templates approved. Without DLT registration, SMS messages will be blocked by telecom operators. SpringEdge handles DLT compliance automatically once you provide your entity ID and approved templates. See our DLT Information page for detailed instructions.
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How fast are SMS messages delivered through SpringEdge?
Most SMS messages are delivered within 3 to 5 seconds of the API call. SpringEdge uses intelligent routing that automatically selects the fastest delivery path across all Indian telecom operators — Jio, Airtel, Vodafone Idea, and BSNL/MTNL. For OTP verification messages, delivery typically happens in under 3 seconds. The platform provides real-time delivery reports via webhooks, so your application knows the exact delivery status of every message.
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What is RCS messaging and how is it different from SMS?
RCS (Rich Communication Services) is the next generation of SMS that enables businesses to send branded, interactive messages directly through the recipient's default messaging app — no separate app installation required. Unlike plain-text SMS, RCS supports high-resolution images, product carousels, action buttons, suggested replies, verified sender profiles with your company logo, and read receipts. If the recipient's device or carrier does not support RCS, the message automatically falls back to standard SMS, ensuring 100% reachability.
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Why choose SpringEdge as your bulk SMS service provider in India?
SpringEdge is one of the most reliable bulk SMS companies in India, trusted by thousands of businesses for their messaging needs. Key advantages include: 99.99% API uptime with carrier-grade infrastructure, sub-3-second OTP delivery, intelligent routing across all Indian telecom operators, complete DLT compliance with automated template management, pay-as-you-go pricing with no monthly fees, real-time delivery reports and webhook callbacks, and dedicated support from our Bangalore-based team. Whether you need transactional alerts, promotional campaigns, or OTP verification — SpringEdge delivers at scale.