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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

AT&T Landline Texting API Solution

Landline Texting API process graphic

API Overview

Once a number has been registered for AT&T Landline Texting API services, you will be able to send and receive messages using your existing toll-free or landline number.

Texting Methods

Short Polling:

Query frequently to request any new message traffic on your account

Webhooks:

Webhooks or callbacks give you real-time updates of new messages sent or received on your text-enabled number

The API solution provides comprehensive functionality to customers who wish to tailor a texting solution specific to their business needs. The API can be used in conjunction with your existing web or mobile apps, giving you the ability to add custom features and avoid the need to maintain standalone apps.

Professional services are also available to assist customers with their API integration. Resources are available to support design, custom development, project management, and training. Any professional services work to be performed will be quoted in a statement of work.

Toll-Free vs. Landline

 Toll-Free Number
(e.g., 800, 888, 877, etc.)
Landline Number
Type Throughput
  • 30 SMS/second
  • 1 MMS/second
Throughput
  • 1 SMS/second
  • 1 MMS/second
Best Use Cases Delivery receipts
Service messages
Call center texting
Notifications
Purchase receipts
Multi-factor authentication
Automated notifications
Airline delays
Shipping status
Person-to-person messaging
Low-volume notifications
Q&A for basic information

When creating your text messaging program, you will want to consider applicable opt-in or other legal or regulatory requirements. You should seek appropriate guidance from your legal advisor.

Contact Us

Do you have questions, need support, or would like to request a high-volume quote?
Please contact us and we'll get back to you as soon as we're able.

Request Assistance