WhatsApp Cloud API Transactional purpose like
- OTP Sending
- Order Confirmation
- Sending Invoice & Bill
- Service/Product Notifications
- Thank you For shopping
- Thank you for Order
- Thank you for Dining
- Thank you for Registering
- Your OTP Code is “123456”
If your number is Old With WhatsApp you can still Send 50-300-500 Transactional message at once to your customers (who not report you as spam!! or block you on WhatsApp (20-30 blocks or reported as spam may cause your Number Ban on WhatsApp .
You can still unban your number by sending mail to WhatsApp support Just Search You Tube How to Unban WhatsApp Number.