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Outage in Twilio

SMS Delivery Receipt Delays from Twilio to Algar Telecom Brazil

Resolved Minor
May 31, 2026 - Started 9 days ago - Lasted 1 day
Official incident page

Incident Report

Summary AI Generated

Twilio experienced a 31-hour incident where SMS delivery receipts from Twilio phone numbers to Algar Telecom network subscribers in Brazil were significantly delayed, though actual message delivery continued to succeed. The issue affected Twilio's SMS service in Latin America, specifically impacting customers' ability to receive timely confirmation that their messages were delivered to Algar Telecom recipients. The incident was resolved after the team identified the root cause and implemented a fix, with service returning to normal operations.

Twilio customers may be experiencing SMS delivery receipt delays from Twilio Phone Numbers to Algar Telecom network subscribers in Brazil. 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.
Components affected
Twilio SMS, Latin America

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Latest Updates ( sorted recent to last )
RESOLVED 8 days ago - at 06/01/2026 12:48PM

The incident has been resolved and SMS delivery receipts from Twilio Phone Numbers to Algar Telecom network subscribers in Brazil is operating normally.

MONITORING 8 days ago - at 06/01/2026 10:46AM

We have observed a recovery in SMS delivery receipts from Twilio to Algar Telecom network subscribers in Brazil and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.

IDENTIFIED 8 days ago - at 05/31/2026 10:24PM

Twilio customers may be experiencing SMS delivery receipt delays from Twilio Phone Numbers to Algar Telecom network subscribers in Brazil. 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 9 days ago - at 05/31/2026 02:23PM

Twilio customers may be experiencing SMS delivery receipt delays from Twilio Phone Numbers to Algar Telecom network subscribers in Brazil. 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.

IDENTIFIED 9 days ago - at 05/31/2026 10:23AM

Twilio customers may be experiencing SMS delivery receipt delays from Twilio Phone Numbers to Algar Telecom network subscribers in Brazil. 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 9 days ago - at 05/31/2026 08:23AM

Twilio customers may be experiencing SMS delivery receipt delays from Twilio to Algar Telecom network subscribers in Brazil. 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.

IDENTIFIED 9 days ago - at 05/31/2026 07:23AM

Twilio customers may be experiencing SMS delivery receipt delays from Twilio to Algar Telecom network subscribers in Brazil. 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.

INVESTIGATING 9 days ago - at 05/31/2026 06:56AM

Twilio customers may be experiencing SMS delivery receipt delays from Twilio Phone Numbers to Algar Telecom network subscribers in Brazil. Our team is actively investigating this 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 9 days ago - at 05/31/2026 05:50AM

Twilio customers may be experiencing SMS delivery receipt delays from Twilio Phone Numbers to Algar Telecom network subscribers in Brazil. 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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