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 SMS delivery receipt delays from a subset of Twilio Short Codes to Viaero network subscribers in the United States. This incident has been resolved.

Posted Mar 20, 2026 - 13:26 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 are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.

Posted Mar 20, 2026 - 11:45 PDT

Monitoring

Posted Mar 20, 2026 - 09:40 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 24 hours or as soon as more information becomes available.

Posted Mar 20, 2026 - 01:42 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 19, 2026 - 09:49 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 8 hours or as soon as more information becomes available.

Posted Mar 19, 2026 - 01:49 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 18, 2026 - 21:59 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 2 hour or as soon as more information becomes available.

Posted Mar 18, 2026 - 20:02 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 1 hour or as soon as more information becomes available.

Posted Mar 18, 2026 - 19:05 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 18, 2026 - 18:08 PDT

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