Mobile operators treat different kinds of SMS differently. Understanding the distinction between transactional and promotional SMS helps African businesses achieve better delivery rates, choose the right sender IDs, and stay compliant with local regulations.
Transactional SMS
Transactional messages support a customer's existing relationship with you: OTPs, banking alerts, delivery notifications, appointment reminders and password resets. Operators prioritise this traffic because it's expected and time-sensitive. It typically uses alphanumeric sender IDs and doesn't require separate marketing opt-in.
Promotional SMS
Promotional messages market to customers: sales, discounts, product launches and offers. This traffic usually requires explicit opt-in, may be deprioritised during network congestion, and is subject to marketing regulations. Timing and personalisation matter more here.
Key Differences at a Glance
| Feature | Transactional | Promotional |
|---|---|---|
| Examples | OTPs, alerts, reminders | Sales, offers, launches |
| Delivery priority | Highest | Standard |
| Opt-in required | Implied | Explicit |
Getting Both Right
eSMS Africa supports both transactional and promotional traffic with appropriate routing and sender ID handling for each. Separating the two — and following opt-in rules for promotions — keeps your delivery rates high and your programme compliant.