Outage in Zipwhip

SMS Delivery Delays from Twilio to Algar Telecom (CTBC) Brazil

Resolved Minor

September 18, 2026 - Started 1 day ago - Lasted about 10 hours
Official incident page

Incident Report

Summary AI Generated

Zipwhip experienced a 10.5-hour incident where SMS messages from Twilio to Algar Telecom (CTBC) network subscribers in Brazil faced delivery delays. The cause was identified and addressed by the team, with recovery observed before full resolution was confirmed. SMS delivery to the affected network was restored and operating normally by the end of the incident.

Twilio customers may be experiencing SMS delivery delays from Twilio to Algar Telecom network subscribers in Brazil. Our team is actively investigating this issue. 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 about 24 hours ago - at 09/18/2026 11:00PM

The incident has been resolved and SMS delivery from Twilio to Algar Telecom (CTBC) network subscribers in Brazil is operating normally.

MONITORING 1 day ago - at 09/18/2026 09:50PM

We have observed a recovery in SMS delivery from Twilio to Algar Telecom (CTBC) network subscribers in Brazil and are monitoring service stability. We will provide another update in 4 hours or as soon as more information becomes available.

MONITORING 1 day ago - at 09/18/2026 07:50PM

We have observed a recovery in SMS delivery 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 1 day ago - at 09/18/2026 03:49PM

Twilio customers may be experiencing SMS delivery delays from Twilio to Algar Telecom network subscribers in Brazil. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 4 hours or as soon as more information becomes available.

IDENTIFIED 1 day ago - at 09/18/2026 01:48PM

Twilio customers may be experiencing SMS delivery delays from Twilio to Algar Telecom network subscribers in Brazil. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.

IDENTIFIED 1 day ago - at 09/18/2026 12:48PM

Twilio customers may be experiencing SMS delivery delays from Twilio to Algar Telecom network subscribers in Brazil. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.

INVESTIGATING 1 day ago - at 09/18/2026 12:35PM

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