Twilio outage on 2026-09-01: MMS Delivery Failures from AT&T United States to a Subset of Twilio Long Codes and Toll-Free Numbers

Twilio customers may be experiencing MMS delivery failures from AT&T network subscribers in the United States to a subset of Twilio Long Codes and Toll-Free Numbers. 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.