1. Click on Automation on your left bar menu then click on create flow.
2. Drag and drop “Rate limit” option into your screen.
3. Double-click on the rate limit, and add the detail related to your contact.
4. Now Drag and drop send SMS option into your flow.
5. Double-click on send SMS and add the detail related to your SMS.
6. Save and publish your flow, Your process is complete.
