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The MMS API was deprecated on July 29, 2015. Get more information about our supported APIs.
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/apis/sms-mms /apis/mms/docs
The Device Capabilities API was deprecated on July 29, 2015. Get more information about our supported APIs.
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/apis/device-capabilities /apis/device-capabilities/docs

AttentionTo help protect AT&T subscribers against improper messaging activity, the SMS API requires
Premium Access and special permission before it can be used.



Send a message with a single line of code

Our RESTful APIs make sending SMS short code messages a snap.
To look under the hood, try our Sample Apps or Quickstart guide.

   SMS Quickstart   

SMS Sample Apps






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Up to 1 Million Messaging API calls per month are included when you upgrade to Premium Access

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Broadcast up to 50 recipients per API call

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Secure platform to protect subscribers from spam

Want to learn more? Dive into the SMS documentation, read the FAQs or check out the pricing.

  • Developers love using the AT&T SMS API!
    "The AT&T SMS API fit our needs perfectly. We cut our development time by 25%."

    Chas Ramer, CEO of Street Savings


    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.
    Offer promotions
    Send your most loyal customers exclusive, limited-time deals.
    Get instant feedback
    Poll your customers about important issues.

  • Ready to Get Started?

    Take a few moments to sign up

    Start Now
  • Still have questions? 

    Choose from multiple support options

    Contact Support