SMS and MMS Delivery Delays and Failures Between Twilio and AT&T in United States

Incident Report for Twilio

Update

Twilio customers may be experiencing SMS and MMS delivery delays and failures between Twilio and AT&T network subscribers in the United States. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 4 hours or as soon as more information becomes available.

Posted Apr 17, 2026 - 22:24 PDT

Update

We are continuing to work on a fix for this issue.

Posted Apr 17, 2026 - 20:58 PDT

Update

Twilio customers may be experiencing SMS and MMS delivery delays between Twilio and AT&T network subscribers in the United States. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.

Posted Apr 17, 2026 - 20:20 PDT

Identified

Twilio customers may be experiencing SMS and MMS delivery delays between Twilio and AT&T network subscribers in the United States. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.

Posted Apr 17, 2026 - 19:19 PDT

Investigating

Twilio customers may be experiencing SMS and MMS delivery delays and failures between Twilio and AT&T network subscribers in the United States. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.

Posted Apr 17, 2026 - 18:58 PDT

This incident affects: CARRIER NETWORK (SMS Long Code, North America, MMS Long Code, North America, SMS Short Code, North America, MMS Short Code, North America, SMS Toll-Free, North America, MMS Toll-Free, North America) and ZIPWHIP MESSAGING (SMS Long Code, North America, MMS Long Code, North America, SMS Toll-Free, North America, MMS Toll-Free, North America).