Transactional SMS India —
Instant Alerts, Every Time
Send OTPs, order confirmations, bank alerts, shipping updates and appointment reminders to every customer — including DND numbers — 24×7. TRAI-compliant, AWS-hosted, with 99.9% uptime and sub-5-second delivery.
Open Rate
Time (all networks)
Nights & Holidays
Number Coverage
Critical alerts that customers expect and trust
Transactional SMS is a category of SMS messaging used to send important, time-sensitive information to customers. These messages are triggered by a specific customer action or business event — a purchase, login, bank transaction, appointment or delivery update.
Unlike promotional SMS, transactional messages can be delivered to DND-registered numbers 24×7 without any time restrictions — because they carry information the customer has directly requested or needs as part of a transaction.
Every type of transactional message you can send
BookMySMS supports the full range of TRAI-approved transactional SMS categories — for businesses of every size and industry.
Why businesses choose BookMySMS for transactional SMS
Instant Delivery
Messages are delivered in under 5 seconds across all Indian operators — Airtel, Jio, Vodafone, BSNL and all virtual networks. Critical for OTPs and fraud alerts.
DND Delivery — Always
TRAI rules allow transactional SMS to be delivered to DND-registered numbers without restrictions. We ensure full compliance so your messages always get through.
Simple HTTP API
Trigger SMS from any application with a single HTTP GET or POST request. Full documentation, SDKs for PHP, Python, Node.js and Java, plus Postman collections.
Dedicated Account Manager
Every BookMySMS customer gets a dedicated account manager to help with DLT registration, sender ID setup, template approval and ongoing campaign optimisation.
Real-Time Reporting
Track delivery status, operator-wise reports and failure reasons in real time from your dashboard. Webhook callbacks push delivery receipts to your system instantly.
TRAI & DLT Compliant
Fully compliant with TRAI's Distributed Ledger Technology regulations. We assist with DLT registration, PE ID setup and template approval for all clients.
Go live with transactional SMS in 4 steps
Create Your Account
Sign up on BookMySMS, complete your business KYC and get your account activated — usually within a few hours.
DLT Registration
Register your company as a Principal Entity on the DLT portal (TRAI mandate). We guide you step-by-step — most clients finish in one day.
Get Your Sender ID & Templates
Apply for your 6-character sender ID (e.g. BMSOTPX) and get your message templates approved on the DLT platform.
Integrate & Send
Connect via our HTTP API or use the dashboard to send. Your first SMS can go live within minutes of template approval.
Send transactional SMS from any platform
Our battle-tested HTTP API handles millions of messages daily. Integrate in under 30 minutes with a single GET request — no complex SDKs required. Delivery receipts pushed via webhook in real time.
HTTP GET / POST API
Send SMS with a single URL call. Works with any language — PHP, Python, Node.js, Java, .NET.
Delivery Webhooks
Get real-time delivery status — Delivered, Failed, Pending — pushed to your endpoint the moment it happens.
Bulk API Support
Send up to 10,000 SMS per second via our bulk API endpoint. Handles millions of messages per campaign.
Full Documentation
Comprehensive API docs, Postman collections, code samples and sandbox environment for safe testing.
Transactional SMS for every industry
Enterprise messaging solutions at affordable prices — trusted by 80+ businesses across 12+ industry verticals throughout India.
Other SMS services from BookMySMS
Businesses trusting BookMySMS for transactional SMS delivery
Start sending transactional SMS
to every customer today
No setup fee. No lock-in. Our team handles your DLT registration, Sender ID setup and template approval — and your first SMS goes live within hours.