Zingle incident
SMS Delivery Receipt Delays from a Subset of Twilio Short Codes to Multiple Networks in United States
Zingle experienced a major incident on October 1, 2026 affecting Twilio and SMS Short Code, North America and 1 more component, lasting 3h 10m. The incident has been resolved; the full update timeline is below.
Affected components
Update timeline
- investigating Oct 01, 2026, 05:35 AM UTC
Twilio customers may be experiencing SMS delivery receipt delays from a subset of Twilio Short Codes to network subscribers on multiple networks in the United States. Our team is actively investigating this issue. Message delivery may succeed, but delivery receipts may be delayed. We will provide another update in 1 hour or as soon as more information becomes available.
- identified Oct 01, 2026, 06:24 AM UTC
Twilio customers may be experiencing SMS delivery receipt delays from a subset of Twilio Short Codes to network subscribers on multiple networks in the United States. Our team has identified the cause, and is working to resolve the issue. Message delivery may succeed, but delivery receipts may be delayed. We will provide another update in 1 hour or as soon as more information becomes available.
- monitoring Oct 01, 2026, 07:24 AM UTC
We have observed a recovery in SMS delivery receipts from a subset of Twilio Short Codes to network subscribers on multiple networks in the United States and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
- resolved Oct 01, 2026, 08:45 AM UTC
The incident has been resolved and SMS delivery receipts from a subset of Twilio Short Codes to affected networks in the United States are operating normally.
- monitoring Oct 01, 2026, 09:35 AM UTC
Twilio customers may be experiencing SMS delivery receipt delays from a subset of Twilio Short Codes to network subscribers on multiple networks in the United States. Our team is actively investigating this issue. Message delivery may succeed, but delivery receipts may be delayed. We will provide another update in 1 hour or as soon as more information becomes available.
- monitoring Oct 01, 2026, 10:24 AM UTC
Twilio customers may be experiencing SMS delivery receipt delays from a subset of Twilio Short Codes to network subscribers on multiple networks in the United States. Our team has identified the cause, and is working to resolve the issue. Message delivery may succeed, but delivery receipts may be delayed. We will provide another update in 1 hour or as soon as more information becomes available.
- monitoring Oct 01, 2026, 11:24 AM UTC
We have observed a recovery in SMS delivery receipts from a subset of Twilio Short Codes to network subscribers on multiple networks in the United States and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
- monitoring Oct 01, 2026, 12:45 PM UTC
The incident has been resolved and SMS delivery receipts from a subset of Twilio Short Codes to affected networks in the United States are operating normally.