Transactional SMS Service India
Send critical business communications 24/7 with guaranteed delivery. OTP, alerts, confirmations, and notifications delivered instantly to all customers including DND numbers. TRAI compliant starting at ₹0.10/SMS.
Enterprise-Grade Transactional SMS Features
Built for mission-critical business communications
24/7 Delivery
Send transactional messages anytime without DND restrictions or time limitations as per TRAI guidelines
Instant Delivery
Priority routing ensures transactional SMS are delivered within 2-5 seconds across all Indian networks
High Priority Routing
Transactional messages get highest delivery priority over promotional SMS for critical business communications
Secure & Reliable
End-to-end encryption and secure delivery for sensitive information like OTP and financial alerts
Universal Reach
Reach all mobile numbers including DND-registered numbers for service-related communications
Real-time Reports
Instant delivery reports and analytics for monitoring transactional message performance
Transactional SMS Message Types
Choose the right message type for your business needs
OTP & Verification
Secure one-time passwords and verification codes for authentication and security
Common Examples:
Key Features:
Transaction Alerts
Real-time notifications for financial transactions, payments, and account activities
Common Examples:
Key Features:
Service Notifications
Important service-related updates, alerts, and system notifications for customers
Common Examples:
Key Features:
Emergency Alerts
Critical emergency notifications and urgent communications for immediate customer attention
Common Examples:
Key Features:
Transactional SMS Across Industries
Critical communications for every business sector
Banking & Financial Services
Critical financial communications and security alerts for banking customers
Common Use Cases:
E-commerce & Retail
Order management and customer service communications for online businesses
Common Use Cases:
Healthcare & Pharma
Patient care and medical service communications for healthcare providers
Common Use Cases:
Education & EdTech
Student and parent communications for educational institutions
Common Use Cases:
TRAI Compliance for Transactional SMS
We ensure full regulatory compliance for your transactional communications
TRAI Transactional Guidelines
- Messages must be service-related and non-promotional in nature
- Can be sent 24/7 without time restrictions
- Allowed to DND-registered numbers for service communications
- Must use registered transactional sender IDs
- Content should be factual and service-oriented
- No marketing or promotional content allowed
DLT Registration Requirements
- Entity registration with all telecom operators
- Transactional template registration and approval
- Sender ID registration for transactional use
- Content template compliance verification
- Regular compliance audits and monitoring
- Automatic DLT validation before delivery
Quick Integration for Transactional SMS
Start sending critical business messages with simple API calls
curl -X POST https://api.messagebot.in/v1/sms \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"to": "+919876543210",
"message": "Your payment of ₹1,500 has been successfully processed. Transaction ID: TXN123456789. Thank you for your business.",
"sender_id": "MSGBOT",
"type": "transactional",
"template_id": "1234567890"
}'Node.js SDK
const messagebot = require('messagebot-sdk');
messagebot.sms.sendTransactional({
to: '+919876543210',
message: 'Payment confirmed: ₹1,500',
sender_id: 'MSGBOT',
template_id: '1234567890'
});Python SDK
from messagebot import SMS
sms = SMS(api_key='your_key')
sms.send_transactional(
to='+919876543210',
message='Payment confirmed: ₹1,500',
sender_id='MSGBOT'
)PHP SDK
$messagebot = new MessageBot($apiKey);
$messagebot->sms->sendTransactional([
'to' => '+919876543210',
'message' => 'Payment confirmed: ₹1,500',
'sender_id' => 'MSGBOT'
]);Frequently Asked Questions About Transactional SMS
Everything you need to know about transactional SMS in India
Transactional SMS are service-related messages sent to customers regarding their transactions, account activities, or service updates. Use transactional SMS for OTP delivery, payment confirmations, order updates, appointment reminders, and critical alerts. These messages can be sent 24/7 to any number (including DND) and have higher delivery priority than promotional SMS.
Yes, transactional SMS can be sent to DND (Do Not Disturb) registered numbers as they are service-related communications, not promotional content. TRAI regulations allow transactional messages to reach all customers regardless of DND status, provided the content is purely service-oriented and not promotional.
Transactional SMS typically cost ₹0.10-0.15 per SMS, slightly higher than promotional SMS (₹0.08-0.12) due to priority routing, 24/7 delivery capability, and higher infrastructure costs. However, transactional SMS offer better delivery rates, faster delivery times, and can reach DND numbers, providing better ROI for critical communications.
Transactional SMS are delivered within 2-5 seconds on average across all major Indian telecom operators (Airtel, Jio, Vi, BSNL). Our priority routing ensures transactional messages get precedence over promotional SMS, with automatic retry mechanisms and failover routing for guaranteed delivery.
Transactional SMS content must be purely service-related without any promotional elements. Include: transaction details, service updates, account information, security alerts, or operational notifications. Avoid: marketing language, promotional offers, sales content, or advertising. All content must be factual and directly related to customer transactions or services.
Yes, you can use custom 6-character alphanumeric sender IDs for transactional SMS after TRAI registration. Custom sender IDs improve brand recognition and trust. We handle the entire registration process including DLT approval, operator registration, and ongoing compliance management for your transactional sender IDs.
Yes, we provide comprehensive analytics including real-time delivery status, failure reasons, operator-wise performance, delivery time analysis, success rates, and detailed reporting. You can access reports through dashboard, API, or automated email reports for monitoring transactional SMS performance.
We ensure high delivery rates through: priority routing for transactional messages, direct SMPP connections with all operators, automatic retry mechanisms, intelligent failover routing, real-time network monitoring, redundant infrastructure, and dedicated transactional message queues that bypass promotional traffic.
Yes, our transactional SMS API integrates seamlessly with CRM systems, e-commerce platforms, banking applications, healthcare systems, and custom applications through REST APIs, webhooks, and pre-built connectors. We provide SDKs for popular programming languages and comprehensive integration support.
Our platform implements enterprise-grade security including end-to-end encryption, secure API authentication, IP whitelisting, encrypted data storage, regular security audits, ISO 27001 certification, and compliance with Indian data protection laws. All transactional SMS content is handled with highest security standards.
Related SMS Services
Explore other SMS solutions for your business
Ready to Send Critical Business Messages?
Start sending transactional SMS with guaranteed 24/7 delivery. Get 100 free SMS credits to test our platform.