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Transactional SMS service

Transactional SMS that reaches every customer

Send the messages your customers are waiting for – OTPs, order confirmations, payment and account alerts, appointment reminders – on a transactional route that reaches DND numbers, 24 hours a day.

  • Delivered to DND numbers
  • Sent at any hour, every day
  • DLT entity & template checks
  • Approved templates only
  • Live delivery status
  • API or panel – your choice
Get started free Talk to sales
KCUBNK · TransactionalRs.12,500 credited to your A/c XX4512 on 20-10-26. Avl bal Rs.48,210.
TXAAVY · TransactionalYour appointment with Dr. Menon is confirmed for 21 Oct, 10:30 AM.
SHOPXX · TransactionalOrder #48213 is out for delivery today.

What you can send on the transactional route

Transactional (service) SMS carry information the customer needs. Marketing content is not allowed on this route.

OTPs & verification

Sign-up, login, password-reset and payment OTPs. More on OTP SMS.

Banking alerts

Credit and debit alerts, loan EMI reminders, cheque status and KYC updates.

Orders & delivery

Order confirmation, dispatch, out-for-delivery and return updates.

Appointments

Booking confirmations and reminders for clinics, salons and service centres.

School & college

Attendance, fee due, exam schedule and result notifications to parents.

Account & service

Account activation, plan expiry, bill generated and service status messages.

Compliant by design

Every transactional SMS on VASbay is sent with your DLT entity ID and the content (template) ID of an approved template. Messages that do not match an approved template are blocked by the operators, so VASbay asks you to pick an approved template before sending.

  • Approved sender IDs (6-letter headers) only
  • Template variables ({#var#}) filled with your values
  • Separate credits for the transactional route
  • Delivery report for every number

Send from anywhere

Send from the VASbay panel – to typed numbers, uploaded files or contact groups – or straight from your software with the HTTP API.

See the SMS API

Frequently asked questions

A transactional (service) SMS gives a customer information related to a service they use – an OTP, an order or payment update, an account alert or an appointment reminder. It must not contain promotional content.
Yes. Transactional SMS are delivered to all numbers, including numbers registered under DND (Do Not Disturb), and can be sent at any time of day.
A DLT-registered entity, an approved sender ID (header) of the transactional/service type and approved content templates. Add them in VASbay and pick the template when you send.
Only the variable parts marked {#var#} can change – for example a name, an amount or an OTP. Everything else must match the approved template exactly, or the operator rejects the SMS.
Yes. Use route 2 in the VASbay HTTP API together with your sender ID and the approved template text. See the SMS API page.

Ready to send your first message?

Create a free VASbay account, register your DLT details and start sending in minutes. Our team helps you with sender IDs and templates.

Create free account +91 74060 24025