Exotel is a cloud-based business phone system that is reliable and secure. It is easy to set up. No additional infrastructure or equipment is required. It allows sales and support teams to work from anywhere. Your customers will enjoy a personalized calling experience. Exotel's drag-and-drop builder makes it easy to track, manage, and build call flows. Easy setup of SMS campaigns. We guarantee the best delivery rates. Delivery to more than 190 countries. Easy user verification via SMS and calls. The best success rates and non-intrusive.