SMS Delivery Receipt Delays From a Subset of Twilio Short Codes to Viaero United States

Incident Report for Twilio

Resolved

We are no longer experiencing delivery report delays from a subset of Twilio Short Codes to Viaero network subscribers in the United States. This incident has been resolved.

Posted Mar 25, 2026 - 04:17 PDT

Update

We have observed a recovery in SMS delivery receipts from a subset of Twilio Short Codes to Viaero network subscribers in the United States and will continue monitoring service stability for the next 2 hours. We will provide another update in two hours or sooner if more information becomes available.

Posted Mar 25, 2026 - 02:14 PDT

Update

Posted Mar 25, 2026 - 00:14 PDT

Monitoring

We have observed a recovery in SMS delivery receipts from a subset of Twilio Short Codes to Viaero network subscribers 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.

Posted Mar 24, 2026 - 22:18 PDT

Update

Twilio customers may be experiencing SMS delivery receipt delays from a subset of Twilio Short Codes to Viaero network subscribers 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 16 hours or as soon as more information becomes available.

Posted Mar 24, 2026 - 06:27 PDT

Update

Twilio customers may be experiencing SMS delivery receipt delays from a subset of Twilio Short Codes to Viaero network subscribers 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 6 hours or as soon as more information becomes available.

Posted Mar 23, 2026 - 22:28 PDT

Update

Twilio customers may be experiencing SMS delivery receipt delays from a subset of Twilio Short Codes to Viaero network subscribers 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 4 hours or as soon as more information becomes available.

Posted Mar 23, 2026 - 18:39 PDT

Identified

Twilio customers may be experiencing SMS delivery receipt delays from a subset of Twilio Short Codes to Viaero network subscribers 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 2 hours or as soon as more information becomes available.

Posted Mar 23, 2026 - 16:44 PDT

Investigating

Twilio customers may be experiencing SMS delivery receipt delays from a subset of Twilio Short Codes to Viaero network subscribers 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.

Posted Mar 23, 2026 - 15:44 PDT

This incident affected: CARRIER NETWORK (SMS Short Code, North America).