What is Bulk SMS?
Bulk SMS is the delivery of large volumes of text messages to mobile users in India. Businesses use it for OTP verification, order updates, payment alerts, appointment reminders, and promotional campaigns. Every commercial SMS in India must comply with TRAI DLT regulations.
Transactional vs Promotional SMS
Transactional SMS
Sent to opted-in users for service updates - OTPs, delivery notifications, account alerts. Routed 24/7 on priority paths with high delivery speed.
Promotional SMS
Marketing and offer messages sent to DND-scrubbed lists within TRAI-permitted hours. Requires DLT-registered promotional templates.
Why SMSTAKE for Bulk SMS?
- Direct connections to Jio, Airtel, Vi, and BSNL
- 99.99% delivery target with real-time reports
- End-to-end DLT registration support
- REST API, SMPP, and dashboard sending
- Pan-India coverage - all states and UTs
- Contact sales for plans, API access, and onboarding
Common Use Cases
- OTP SMS for login and payments (BFSI, e-commerce)
- Order and shipment tracking (logistics)
- Exam and admission alerts (EdTech)
- Appointment reminders (healthcare)
- Festival sales and re-engagement campaigns
OTP SMS in India
OTP SMS requires a DLT-registered transactional template and approved sender ID (header). SMSTAKE provides dedicated OTP routes with sub-second dispatch and webhook delivery reports for your verification logic.
Get Started
Talk to our team for Bulk SMS API access, sandbox guidance, and DLT onboarding assistance.