SMS Missing Delivery Receipts From AT&T Network

Resolved

Twilio Programmable Messaging was degraded for 2.5 hours between 12:41 and 4:21 Pacific Time on 05/01/2025. During this period of time, customers may have experienced missing delivery receipts to AT&T network in the US. The issue has now been resolved.

Update

Our engineers are currently investigating the customer impact of a retroactive issue with SMS. We will follow up and provide customer impact details within 2 hours.