Trusted SMS API Provider India for developers

Enterprise SMS APIs for Fast, Secure & Reliable Message Delivery

Integrate DLT SMS API, Non-DLT OTP SMS API, and Any Template SMS API with simple REST APIs. Deliver OTPs, transactional alerts, notifications, and promotional messages with high-speed infrastructure.

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99.99%

Uptime

<200ms

API Response

24×7

Support

Transparent SMS API Pricing

Premium routes with conversion-focused delivery

Choose DLT SMS API, Non-DLT OTP SMS API or Any Template SMS API pricing built for high-volume businesses.

Government compliant

📩 DLT SMS API

  • ✔ Government DLT Compliant
  • ✔ Fast Delivery
  • ✔ Enterprise Grade
  • ✔ REST API

₹0.17 / SMS

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Fast OTP route

🔐 Non-DLT OTP SMS API

  • ✔ Instant OTP Delivery
  • ✔ High Success Rate
  • ✔ JSON REST API
  • ✔ Easy Integration

₹0.22 / SMS

Start OTP API
Popular
Dynamic templates

⚡ Any Template SMS API

  • ✔ Send Dynamic Messages
  • ✔ Any Approved Template
  • ✔ High-Speed Gateway
  • ✔ Enterprise APIs

₹0.27 / SMS

Explore Template API

Developer SMS API Platform

Everything teams need to send, track and automate SMS

REST APIs

Clean HTTPS endpoints for DLT SMS integration, OTP API India, bulk SMS and transactional messaging.

JSON Response

Predictable REST SMS API responses for every request, queue event and delivery report.

High Delivery Rate

Optimized telecom routing for critical OTPs, transactional alerts and business notifications.

Instant OTP Delivery

Built for fast OTP SMS API use cases where verification speed directly impacts conversions.

Unicode Support

Send regional language SMS messages for customers across India with Unicode support.

Bulk SMS

Scale campaign and notification workloads with enterprise-ready bulk SMS gateway capacity.

Transactional SMS

Power payment alerts, wallet events, booking confirmations and account updates.

Webhooks

Receive live status updates, failures and delivery confirmations through webhook events.

Callback URL

Configure callback URLs for real-time API analytics and delivery report automation.

Delivery Reports

Track sent, delivered, failed and queued messages with developer-friendly reporting.

API Authentication

Secure API key authentication with HTTPS headers and production-grade access control.

Enterprise Infrastructure

High-availability SMS Gateway API designed for FinTech and SaaS workloads.

High Availability

Reliable infrastructure and queue handling for mission-critical customer communications.

Developer Friendly

Simple examples, clear error codes and API documentation that engineers can use immediately.

Sandbox Environment

Test payloads, templates and callbacks before production SMS API activation.

API Workflow

From app event to customer SMS in a clean delivery pipeline

A streamlined sequence for OTP generation, SMS Gateway API routing, operator handoff and delivery report automation.

1Application
2Generate OTP
3Send API Request
4SMS Gateway
5Operator Network
6Customer Receives SMS
7Delivery Report

SMS Services

APIs for every messaging use case

DLT SMS API

Enterprise-grade dlt sms api for reliable REST SMS API delivery, reporting and automation.

OTP SMS API

Enterprise-grade otp sms api for reliable REST SMS API delivery, reporting and automation.

Transactional SMS API

Enterprise-grade transactional sms api for reliable REST SMS API delivery, reporting and automation.

Bulk SMS API

Enterprise-grade bulk sms api for reliable REST SMS API delivery, reporting and automation.

Any Template SMS API

Enterprise-grade any template sms api for reliable REST SMS API delivery, reporting and automation.

Notification SMS API

Enterprise-grade notification sms api for reliable REST SMS API delivery, reporting and automation.

Verification SMS API

Enterprise-grade verification sms api for reliable REST SMS API delivery, reporting and automation.

Alert SMS API

Enterprise-grade alert sms api for reliable REST SMS API delivery, reporting and automation.

Why Choose FinPay Ultra

Enterprise reliability with startup-speed integration

FinPay Ultra helps product, engineering and operations teams ship SMS workflows with clear pricing, robust reporting and responsive support.

Affordable Pricing
Instant API Activation
REST APIs
JSON APIs
Developer Friendly
Fast Delivery
Enterprise Infrastructure
99.99% Uptime
High Delivery Success
Dedicated Support
Live Documentation

API Request Example

Clean REST SMS API documentation for fast launches

Use standard POST requests, authentication headers and JSON payloads for OTP SMS API, transactional SMS API and bulk SMS API workflows.

POST /v1/sms/send HTTP/1.1
Host: api.finpayultra.com
Content-Type: application/json
Authorization: Bearer YOUR_API_KEY
X-Client-Id: YOUR_CLIENT_ID

{
  "route": "non_dlt_otp",
  "sender_id": "FINPAY",
  "mobile": "919999999999",
  "template_id": "OTP_LOGIN_001",
  "message": "Your FinPay Ultra OTP is 482913. Valid for 5 minutes.",
  "callback_url": "https://yourdomain.com/sms/dlr"
}

Sample JSON Response

{
  "success": true,
  "message_id": "FPU-SMS-20260719-000842",
  "status": "queued",
  "route": "non_dlt_otp",
  "delivery_rate": "98.7%",
  "estimated_delivery_ms": 142,
  "balance": 49280,
  "callback_enabled": true
}

99.99%

API Uptime

<200ms

Average Response Time

Millions

SMS Processed

24×7

Technical Support

REST API

Developer Ready

JSON

Response

Industries

Built for regulated and high-volume teams

FinPay Ultra SMS APIs support customer verification, payment communication, account alerts and business notifications across sectors.

FinTech Banking NBFC Wallet Apps Gaming E-commerce Healthcare Education Travel Insurance Government Services Enterprise Applications

Comparison

Traditional SMS Gateway vs FinPay Ultra SMS APIs

CapabilityTraditional SMS GatewayFinPay Ultra SMS APIs
Delivery SpeedVariable queues and limited route visibilityFast OTP SMS API routing with live delivery status
IntegrationManual setup and legacy panelsDeveloper SMS API with REST endpoints and JSON
AutomationLimited callbacksWebhooks, callback URLs and automated reports
ReportingDelayed delivery reportsReal-time delivery reports and API analytics
ScalabilityManual capacity planningEnterprise infrastructure for bulk SMS gateway scale
SecurityBasic credentialsHTTPS, API authentication and controlled production access
PricingOpaque plansDLT ₹0.17, OTP ₹0.22, Any Template ₹0.27 per SMS
Developer ExperienceSparse documentationLive documentation, sandbox and sample payloads

FAQ

SMS API questions answered

SEO-optimized answers for DLT SMS API, Non-DLT OTP SMS API, Bulk SMS API and Transactional SMS API integrations.

What is DLT SMS API?

DLT SMS API is a developer interface for sending SMS through DLT-compliant telecom routes using registered sender IDs, headers and approved templates.

What is Non-DLT OTP SMS API?

Non-DLT OTP SMS API is an OTP-focused route for fast verification messages where applicable, delivered through a simple JSON REST API.

What is Any Template SMS API?

Any Template SMS API helps businesses send dynamic messages mapped to approved templates for alerts, notifications and customer communication.

Which API is best for OTP?

The Non-DLT OTP SMS API is best suited for login, signup, payment and account verification flows that need fast OTP delivery.

How do I integrate SMS API?

Create API credentials, add authentication headers, send a POST request with mobile number and message data, then process the JSON response.

Do you provide sandbox access?

Yes. FinPay Ultra supports sandbox testing for developers before switching to live SMS API credentials.

Is the API secure?

Yes. API requests use HTTPS, authenticated headers, access controls and delivery tracking for secure enterprise messaging.

Do you support Unicode SMS?

Yes. Unicode SMS is supported for Indian regional languages and multilingual transactional communication.

Do you provide delivery reports?

Yes. You can access delivery reports through dashboards, APIs, webhooks and callback URLs.

Can I integrate using PHP?

Yes. PHP applications can integrate through standard cURL, Guzzle or any HTTP client that supports JSON POST requests.

Do you support Node.js?

Yes. Node.js developers can use fetch, Axios or SDK-style wrappers to send OTP SMS and transactional alerts.

What authentication methods are supported?

FinPay Ultra supports API-key authentication through secure headers for production SMS API requests.

How quickly can I start sending SMS?

Once your account, route and template requirements are activated, you can start sending SMS via REST API immediately.

What is Bulk SMS API?

Bulk SMS API enables automated high-volume messaging for customer alerts, promotional updates and notifications.

What is Transactional SMS API?

Transactional SMS API sends service-critical updates such as OTPs, payment confirmations, delivery alerts and account notifications.

Can I send promotional messages?

Yes, promotional messaging can be supported based on approved route, regulatory compliance and use-case requirements.

Do you support webhooks?

Yes. Webhooks can push delivery status, failures and message lifecycle events to your application.

What is the average API response time?

FinPay Ultra is optimized for low-latency requests, with an average response time target shown as under 200ms.

Is this suitable for FinTech apps?

Yes. FinPay Ultra is designed for FinTech, banking, NBFC, wallet, payment and enterprise SaaS applications.

What are the SMS API prices?

DLT SMS API is ₹0.17/SMS, Non-DLT OTP SMS API is ₹0.22/SMS and Any Template SMS API is ₹0.27/SMS.

Start Sending SMS with FinPay Ultra APIs

Deliver OTPs, transactional alerts, and business notifications with fast, reliable, and scalable SMS APIs.

Get DLT SMS API, Non-DLT OTP SMS API, Any Template SMS API and Bulk SMS API access with transparent pricing and developer-friendly support.

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