Telerivet

Telerivet makes it easy for businesses and organizations anywhere in the world to communicate with their customers, employees, and community via SMS and voice.
Telerivet provides powerful tools to send and receive SMS, organize your messages and contacts, and create automated services such as opt-in subscriptions, polls, auto-replies, and interactive voice response systems.
By connecting one or more virtual phone numbers to your Telerivet account, you can allow mobile phone users to send SMS messages to your business or organization. You can also invite your entire team to send messages from your virtual number or alphanumeric sender ID.
With the Telerivet app, you can receive notifications when someone sends an SMS to your virtual number, and manage your campaigns and services from your phone.
SMS and voice calls are sent and received via third-party providers such as Nexmo, not from the iOS device itself. The Telerivet iOS app provides a mobile-friendly interface to the functionality in the Telerivet web app.