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Outage in Twilio

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

Resolved Minor
March 23, 2026 - Started 12 days ago - Lasted 1 day
Official incident page

Incident Report

Summary AI Generated

Twilio customers experienced SMS delivery receipt delays when sending messages from certain Twilio Short Codes to Viaero network subscribers in the United States, though message delivery itself continued to succeed. The issue affected SMS Short Code services in North America for 36.6 hours before being resolved. Twilio identified the root cause and monitored service recovery before confirming full resolution of the delivery receipt delays.

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.

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Latest Updates ( sorted recent to last )
RESOLVED 11 days ago - at 03/25/2026 11:17AM

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.

MONITORING 11 days ago - at 03/25/2026 09:14AM

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.

MONITORING 11 days ago - at 03/25/2026 07:14AM

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.

MONITORING 11 days ago - at 03/25/2026 05:18AM

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.

IDENTIFIED 12 days ago - at 03/24/2026 01:27PM

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.

IDENTIFIED 12 days ago - at 03/24/2026 05:28AM

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.

IDENTIFIED 12 days ago - at 03/24/2026 01:39AM

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.

IDENTIFIED 12 days ago - at 03/23/2026 11:44PM

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.

INVESTIGATING 12 days ago - at 03/23/2026 10:44PM

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.

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