OTP SMS Service India
Secure verification codes delivered instantly across India. 99.9% success rate with 3-second delivery for login, payments, and registration. Enterprise-grade security starting at ₹0.12/SMS with fraud prevention.
Advanced OTP SMS Features
Built for security, speed, and reliability
Lightning Fast Delivery
OTP delivered within 3 seconds with priority routing and dedicated infrastructure for time-sensitive verification
Enhanced Security
End-to-end encryption, secure code generation, and tamper-proof delivery for maximum security
Configurable Expiry
Set custom OTP validity periods from 30 seconds to 30 minutes based on your security requirements
Smart Retry Logic
Automatic retry mechanisms with intelligent fallback routing to ensure OTP delivery success
Real-time Tracking
Monitor OTP delivery status, success rates, and user verification patterns in real-time
Universal Compatibility
Works across all Indian mobile networks and international numbers with consistent reliability
OTP SMS Use Cases
Secure verification for every business scenario
Login & Authentication OTP
Secure user login verification and two-factor authentication for applications and websites
Common Examples:
Key Features:
Payment & Transaction OTP
Secure payment verification and transaction authentication for financial operations
Common Examples:
Key Features:
Registration & Onboarding OTP
Mobile number verification during user registration and account creation processes
Common Examples:
Key Features:
Password Reset OTP
Secure password reset verification ensuring only authorized users can change account passwords
Common Examples:
Key Features:
Enterprise-Grade OTP Security
Multi-layered security for your verification workflows
Advanced Code Generation
Cryptographically secure random number generation with customizable length and format
- 4-8 digit numeric codes
- Alphanumeric combinations
- Custom format support
- Collision prevention
Delivery Encryption
End-to-end encryption ensuring OTP codes remain secure during transmission
- TLS 1.3 encryption
- Secure API endpoints
- Encrypted storage
- Tamper detection
Rate Limiting & Protection
Built-in protection against spam, abuse, and brute force attacks
- Request rate limiting
- IP-based restrictions
- Attempt monitoring
- Automatic blocking
Compliance & Auditing
Complete audit trails and compliance with security standards and regulations
- Delivery logging
- Access tracking
- Compliance reports
- Security audits
OTP SMS Across Indian Industries
Secure verification solutions for every business sector
Banking & Financial Services
Secure authentication for financial transactions and account access
Common Use Cases:
E-commerce & Retail
Customer verification and secure shopping experiences
Common Use Cases:
Healthcare & Telemedicine
Patient verification and secure healthcare communications
Common Use Cases:
Education & EdTech
Student and parent verification for educational platforms
Common Use Cases:
Simple OTP SMS Integration
Implement secure verification in minutes
curl -X POST https://api.messagebot.in/v1/otp/send \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"to": "+919876543210",
"length": 6,
"expiry": 300,
"message": "Your verification code is {otp}. Valid for 5 minutes. Do not share with anyone.",
"sender_id": "MSGBOT"
}'Node.js SDK
const messagebot = require('messagebot-sdk');
const otp = await messagebot.otp.send({
to: '+919876543210',
length: 6,
expiry: 300
});
console.log('OTP ID:', otp.id);Python SDK
from messagebot import OTP
otp = OTP(api_key='your_key')
result = otp.send(
to='+919876543210',
length=6,
expiry=300
)
print(f'OTP ID: {result.id}')PHP SDK
$messagebot = new MessageBot($apiKey);
$otp = $messagebot->otp->send([
'to' => '+919876543210',
'length' => 6,
'expiry' => 300
]);
echo 'OTP ID: ' . $otp->id;// Verify OTP
curl -X POST https://api.messagebot.in/v1/otp/verify \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"otp_id": "otp_123456789",
"code": "123456"
}'Frequently Asked Questions About OTP SMS
Everything you need to know about secure OTP delivery in India
OTP (One-Time Password) SMS is a secure verification method that sends temporary codes to users' mobile phones for authentication. It's essential for business security as it provides two-factor authentication, prevents unauthorized access, reduces fraud, and ensures only legitimate users can access accounts or complete transactions. In India, OTP SMS is widely adopted across banking, e-commerce, and digital services.
Our OTP SMS service delivers verification codes within 2-3 seconds on average across all major Indian telecom operators (Airtel, Jio, Vi, BSNL). We use priority routing, dedicated infrastructure, and direct operator connections to ensure the fastest possible delivery for time-sensitive authentication codes.
Our OTP SMS service includes: cryptographically secure code generation, end-to-end encryption during transmission, secure API authentication, rate limiting to prevent abuse, audit logging for compliance, tamper detection, and ISO 27001 certified infrastructure. All OTP codes are single-use and time-bound for maximum security.
Yes, our OTP SMS service offers full customization including: code length (4-8 digits), numeric or alphanumeric format, custom validity periods (30 seconds to 30 minutes), personalized message templates, custom sender IDs, and branded message content while maintaining security standards.
Our platform includes automatic retry mechanisms with intelligent fallback routing. If primary delivery fails, the system automatically retries through alternative operator routes within seconds. We also provide real-time delivery status, failure notifications, and option for voice OTP as backup for critical authentication flows.
We implement multiple fraud prevention measures including: rate limiting per mobile number, IP-based restrictions, device fingerprinting, suspicious pattern detection, real-time monitoring, automatic blocking of fraudulent requests, and compliance with banking security guidelines for OTP delivery.
Yes, our OTP SMS API integrates seamlessly with popular authentication systems, identity providers, and custom applications through REST APIs, webhooks, and SDKs. We support integration with Auth0, Firebase Auth, custom authentication systems, and provide detailed documentation for smooth implementation.
Our OTP SMS analytics include: real-time delivery status, success/failure rates, average delivery time, operator-wise performance, user verification patterns, fraud attempt monitoring, geographic delivery analysis, and detailed reporting for security audits and compliance requirements.
Yes, our OTP SMS service supports international delivery to 200+ countries with competitive rates and reliable delivery. Perfect for Indian businesses with global customers or international operations requiring secure authentication across borders.
We provide multiple backup options including: automatic retry through different operators, voice OTP as fallback, email OTP delivery, push notification OTP, and WhatsApp OTP. Our intelligent routing system automatically selects the best available method to ensure successful verification.
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Secure Your Business with Reliable OTP SMS
Protect your customers and business with instant, secure verification codes. Get 100 free OTP SMS to test our platform.