The SMS API requires free full access and special permission before it can be used. The API is intended for established businesses or organizations to send SMS Shortcode messages to AT&T subscribers within the United States.
Up to 1 Million Messaging API calls per month are included when you complete your free access
Broadcast up to 50 recipients per API call
Secure platform to protect subscribers from spam
Short code messaging is one of the easiest ways to increase user engagement, improve customer service, and drive more sales.
Use the AT&T Messaging API for SMS to:
Send alerts & reminders
Help keep your users on track with well-timed, targeted texts.
Send your most loyal customers exclusive, limited-time deals.
Get instant feedback
Poll your customers about important issues.