Twilio incident
SMS and MMS Delivery Delays and Failures Between Twilio and AT&T in United States
Resolved after 12 hours 37 minutes, affecting MMS Long Code, North America, on April 18, 2026.
MMS delivery receipts in the United States is now operating normally. This incident has been resolved.
Affected components
Update timeline
- investigating Apr 18, 2026, 01:58 AM UTC
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.
- identified Apr 18, 2026, 02:19 AM UTC
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.
- identified Apr 18, 2026, 03:20 AM UTC
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.
- identified Apr 18, 2026, 03:58 AM UTC
We are continuing to work on a fix for this issue.
- identified Apr 18, 2026, 05:24 AM UTC
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.
- identified Apr 18, 2026, 06:44 AM UTC
Twilio customers are no longer experiencing SMS and MMS delivery delays and failures between Twilio and AT&T network subscribers in the United States. However, we continue to experience issues for MMS delivery receipts. 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
- identified Apr 18, 2026, 10:46 AM UTC
We continue to experience issues for MMS delivery receipts. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 8 hours or as soon as more information becomes available.
- monitoring Apr 18, 2026, 12:34 PM UTC
MMS delivery receipts in the United States is now operating normally. We will continue to monitor for system stability. We'll provide another update in 2 hours or as soon as more information becomes available.
- resolved Apr 18, 2026, 02:36 PM UTC
MMS delivery receipts in the United States is now operating normally. This incident has been resolved.
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