- Promotional SMS: Marketing offers, sales, discounts, etc. Sent only between 9 AM to 9 PM to non-DND numbers.
- Transactional SMS: Critical messages like OTPs, banking alerts, and password resets. Can be sent 24×7, including to DND numbers.
- Service Explicit SMS: Messages requiring customer consent (e.g., updates about new launches).
- Service Implicit SMS: Informational messages like order updates, appointment reminders, etc.
Read more on SMS Types