Quick answer
The category decides who your SMS can reach and when.
| Category | Used for | Reaches DND numbers? | Timing |
|---|---|---|---|
| Promotional | Offers, sales, announcements | No | 9 AM to 9 PM |
| Service implicit | Order, delivery and account updates | Yes | Any time |
| Service explicit | Messages that need customer consent | Yes, with consent | Any time |
| Transactional | OTPs and bank alerts | Yes | Any time |
How to choose
- If the message sells something, it is promotional.
- If the customer expects it because of something they did, it is service.
- OTPs and banking alerts are transactional.
Read the full guide on promotional vs transactional SMS.
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