Twilio incident
SMS Delivery Failures between Twilio Phone Numbers and AT&T in Mexico
Twilio experienced a minor incident on May 14, 2026 affecting SMS, Latin America, lasting 4d 15h. The incident has been resolved; the full update timeline is below.
Affected components
Update timeline
- investigating May 14, 2026, 08:50 PM UTC
Twilio customers may be experiencing SMS delivery failures from Twilio Phone Numbers to AT&T network subscribers in Mexico. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.
- identified May 14, 2026, 08:58 PM UTC
Twilio customers may be experiencing SMS delivery failures from Twilio Phone Numbers to AT&T network subscribers in Mexico. 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 May 14, 2026, 10:01 PM UTC
Twilio customers may be experiencing SMS delivery failures from Twilio Phone Numbers to AT&T network subscribers in Mexico. 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 May 14, 2026, 10:33 PM UTC
Twilio customers may be experiencing SMS delivery failures between Twilio Phone Numbers and AT&T network subscribers in Mexico. 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 May 14, 2026, 11:34 PM UTC
Twilio customers may be experiencing SMS delivery delays and failures between Twilio Phone Numbers and AT&T network subscribers in Mexico. 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 May 15, 2026, 01:34 AM UTC
Twilio customers may be experiencing SMS delivery delays and failures between Twilio Phone Numbers and AT&T network subscribers in Mexico. 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 May 15, 2026, 05:37 AM UTC
Twilio customers may be experiencing SMS delivery failures between Twilio Phone Numbers and AT&T network subscribers in Mexico. 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.
- identified May 15, 2026, 01:44 PM UTC
Twilio customers may be experiencing SMS delivery delays and failures between Twilio Phone Numbers and AT&T network subscribers in Mexico. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 16 hours or as soon as more information becomes available.
- identified May 16, 2026, 05:45 AM UTC
Twilio customers may be experiencing SMS delivery failures and delays between Twilio Phone Numbers and AT&T network subscribers in Mexico. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 24 hours or as soon as more information becomes available.
- identified May 17, 2026, 05:46 AM UTC
Twilio customers may be experiencing SMS delivery delays and failures between Twilio Phone Numbers and AT&T network subscribers in Mexico. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 24 hours or as soon as more information becomes available.
- identified May 18, 2026, 05:51 AM UTC
Twilio customers may be experiencing SMS delivery failures between Twilio Phone Numbers and AT&T network subscribers in Mexico. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 24 hours or as soon as more information becomes available.
- monitoring May 19, 2026, 05:54 AM UTC
We have observed a recovery in SMS delivery between Twilio Phone Numbers and AT&T network subscribers in Mexico and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
- monitoring May 19, 2026, 07:56 AM UTC
We have observed a recovery in SMS delivery between Twilio Phone Numbers and AT&T network subscribers in Mexico and are monitoring service stability. We will provide another update in 4 hours or as soon as more information becomes available.
- resolved May 19, 2026, 12:01 PM UTC
The incident has been resolved and SMS delivery between Twilio Phone Numbers and AT&T network subscribers in Mexico is operating normally.