Deliver critical business messages — OTPs, account alerts, order confirmations — to all numbers including DND, 24 hours a day, 7 days a week with guaranteed 99.9% uptime.
Transactional SMS is a special category of SMS designed to deliver time-critical, non-promotional messages that your customers need to receive — regardless of whether they are registered on the DND (Do Not Disturb) list.
Unlike Promotional SMS, Transactional SMS can reach 100% of your contact database at any time of day or night. This makes it the go-to service for banks, e-commerce platforms, hospitals, fintech apps, and any business that needs to send alerts, OTPs, or confirmations without fail.
As a DLT Approved Transactional SMS Provider in Ahmedabad, Synergy DataTech ensures your critical messages are delivered with guaranteed uptime, instant speed, and full TRAI compliance — backed by 20+ years of experience serving Gujarat businesses.
Request a Free QuoteUnderstanding which SMS type your business needs is key to staying TRAI compliant
| Feature | Transactional SMS | Promotional SMS |
|---|---|---|
| DND Numbers | ✓ Delivered | ✗ Blocked |
| Sending Time | ✓ 24/7 Anytime | ✗ 9 AM – 9 PM only |
| Purpose | OTPs, Alerts, Confirmations | Offers, Campaigns, Promotions |
| Sender ID Type | 6-character Alpha Numeric | 6-character Alpha Numeric |
| DLT Template | ✓ Required | ✓ Required |
| Delivery Rate | ✓ 99.9% Guaranteed | Varies (DND filtered) |
| Best For | Banks, Apps, Hospitals, E-com | Retail, Events, Marketing |
Any business that needs to send critical, time-sensitive messages can benefit from Transactional SMS
Send login OTPs, payment verification codes, and 2-factor authentication messages to users instantly.
Account alerts, transaction confirmations, EMI reminders, KYC updates, and fraud warnings.
Order placed, payment received, shipped, out-for-delivery, and delivery confirmation alerts.
Appointment confirmations, prescription ready alerts, lab report status, and emergency notifications.
Exam results, attendance alerts, fee payment confirmations, and admission status updates to students.
Dispatch alerts, tracking updates, delivery confirmations, and driver arrival notifications.
Synergy DataTech is fully registered on the DLT (Distributed Ledger Technology) platform as mandated by TRAI. All Transactional SMS sent through our platform uses approved headers and pre-registered templates — ensuring your messages are legally compliant and never blocked by telecom operators.
We also assist all our clients with their own DLT registration — entity registration, header setup, and template approval — completely free of charge as part of our onboarding process.
We handle all the complexity — you just focus on sending messages
Contact us with your requirements — volume, use case, and integration needs.
We register your entity, Sender ID, and message templates on the DLT portal for you.
Integrate our REST API into your application with our developer-friendly documentation in hours.
Start sending OTPs, alerts, and transactional messages 24/7 with real-time tracking.
Everything you need to know about Transactional SMS in Ahmedabad & Gujarat
Yes. As per TRAI regulations, Transactional SMS is exempt from DND filters because it carries important, non-promotional information that customers need to receive. This includes OTPs, account alerts, order updates, appointment reminders, and similar messages.
Transactional SMS is for critical, non-commercial messages to all numbers 24/7 (OTPs, alerts, confirmations). Promotional SMS is for marketing campaigns and can only be sent to non-DND numbers between 9 AM and 9 PM. Both require DLT registration.
Our platform is designed for 99.9% uptime with redundant servers and automatic failover. Planned maintenance, if any, is scheduled during very low-traffic hours and communicated well in advance. Your OTP and alert delivery will never be compromised.
Yes, each unique message template must be registered on the DLT portal as per TRAI guidelines. Our team will help you register all your templates and manage approvals so you can focus on your business.
Absolutely. Our REST API supports integration with Android, iOS, web apps, and backend systems. We provide sample code in multiple languages and full documentation. Our developer support team is available to help with integration.
Join 500+ businesses in Ahmedabad & Gujarat using Synergy DataTech for reliable, DLT-approved Transactional SMS.