Transactional and promotional SMS are the two main categories of bulk messaging in India. Understanding the difference is important for compliance and effectiveness.
What is Transactional SMS?
Transactional SMS is used for critical, time‑sensitive information such as:
- OTP messages
- Bank alerts
- Order confirmations
- Appointment reminders
These messages can be sent 24/7 and are not affected by DND restrictions.
What is Promotional SMS?
Promotional SMS is used for marketing purposes such as:
- Offers and discounts
- Product launches
- Sales promotions
Promotional SMS can only be sent between 10 AM and 9 PM and is blocked for DND numbers.
Key Differences
- Purpose: Information vs Marketing
- Timing: Anytime vs Fixed hours
- DND: Allowed vs Restricted
Which One Should You Choose?
Most businesses use both. Transactional SMS for trust and communication, promotional SMS for growth and marketing.