Twilio incident

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

Minor Resolved View vendor source →

Twilio experienced a minor incident on April 18, 2026 affecting MMS Long Code, North America, lasting 12h 37m. The incident has been resolved; the full update timeline is below.

Started
Apr 18, 2026, 01:58 AM UTC
Resolved
Apr 18, 2026, 02:36 PM UTC
Duration
12h 37m
Detected by Pingoru
Apr 18, 2026, 01:58 AM UTC

Affected components

MMS Long Code, North America

Update timeline

  1. 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.

  2. 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.

  3. 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.

  4. identified Apr 18, 2026, 03:58 AM UTC

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

  5. 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.

  6. 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

  7. 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.

  8. 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.

  9. resolved Apr 18, 2026, 02:36 PM UTC

    MMS delivery receipts in the United States is now operating normally. This incident has been resolved.