Twilio incident
SMS Delivery Receipt Delays from Twilio to Surf Telecom Brazil
Resolved after 1 day 17 hours, affecting SMS, Latin America, on October 19, 2026.
We have completed our investigation. This event did not cause performance degradation beyond the expected behavior for this Brazilian carrier, which may retry delivery attempts for up to 24 hours before setting a final status. All systems are operating normally.
Affected components
Update timeline
- investigating Oct 19, 2026, 02:41 AM UTC
Twilio customers may be experiencing SMS delivery receipt delays from Twilio to Surf 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.
- identified Oct 19, 2026, 02:49 AM UTC
Twilio customers may be experiencing SMS delivery receipt delays from Twilio to Surf 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.
- identified Oct 19, 2026, 03:49 AM UTC
Twilio customers may be experiencing SMS delivery receipt delays from Twilio to Surf 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 Oct 19, 2026, 05:50 AM UTC
Twilio customers may be experiencing SMS delivery receipt delays from Twilio to Surf 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 Oct 19, 2026, 09:58 AM UTC
Twilio customers may be experiencing SMS delivery receipt delays from Twilio to Surf 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 Oct 19, 2026, 05:58 PM UTC
Twilio customers may be experiencing SMS delivery receipt delays from Twilio to Surf 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 Oct 20, 2026, 10:07 AM UTC
Twilio customers may be experiencing SMS delivery receipt delays from Twilio to Surf 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 24 hours or as soon as more information becomes available.
- resolved Oct 20, 2026, 08:12 PM UTC
We have completed our investigation. This event did not cause performance degradation beyond the expected behavior for this Brazilian carrier, which may retry delivery attempts for up to 24 hours before setting a final status. All systems are operating normally.
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