Latest A2P 10DLC customer advisory (April 28, 2021)

This article contains the latest customer advisory Twilio sent to our customers via email about A2P 10DLC on April 28, 2021.
We will update this page each time a new advisory is sent. The next advisory will be sent during the week of May 10-14, 2021.


Additional AT&T per message long code fees begin May 1, 2021. Both registered and unregistered long code traffic over T-Mobile will incur additional per message fees starting June 1, 2021.


Twilio, in partnership with AT&T and T-Mobile, has begun a phased rollout of application-to-person 10-digit long codes, or A2P 10DLC, for U.S. phone numbers. A2P 10DLC is the new standard from U.S. carriers, requiring you to register who you are and what you’re sending over local long codes in the United States. 

With the transition to A2P 10DLC, we’d like to outline key fee and registration updates below:

Fee Updates

  • Starting May 1, 2021, AT&T carrier fees of $0.002/segment for outbound SMS and $0.0035/message for outbound MMS begin. They will be called out explicitly on your Twilio bill as AT&T fees. 
  • [NEW] Starting June 1, 2021, T-Mobile will apply carrier fees of $0.003/segment for outbound and inbound SMS and $0.01/message for outbound and inbound MMS for all long code messaging traffic, whether you’ve registered for A2P 10DLC or not. Twilio will pass through these fees at no additional markup. 
  • T-Mobile’s one-time campaign activation ($50) and Special Business Review ($5000) fees are waived until further notice. 
  • For a complete list of both AT&T and T-Mobile costs, please review our pricing and fees support article.

Registration Updates

  • When you are selected for access to Twilio’s Trust Hub A2P 10DLC portal or APIs, you will receive an onboarding notification from Twilio. 
  • For ISVs (customers sending messages through Twilio on behalf of their customers), we are continuing to finalize registration details for small businesses sending low volumes of traffic. We’ve made great progress in partnership with AT&T and T-Mobile, and plan a formal update in the coming weeks.

What do you need to do?

At this time, no action is required. We encourage you to prepare for registration by watching our new A2P 10DLC onboarding video, walking through the end-to-end registration experience. Please review the onboarding flow and continue collecting required information (detailed in our support article, How do I register to use A2P 10DLC messaging?) so that you are ready when you receive your registration notification.

With continued U.S. carrier ecosystem updates, our email communications and support articles are the best source-of-truth for specific timelines and requirements for your Twilio traffic. We look forward to our continued partnership to ensure we all benefit from a transparent, verified local long code ecosystem.

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