Twilio incident
SMS Delivery Delays and Delivery Receipt Delays from Twilio to Chunghwa Telecom Taiwan
Twilio experienced a minor incident on October 6, 2026 affecting SMS, APAC, lasting 5h 28m. The incident has been resolved; the full update timeline is below.
Affected components
Update timeline
- investigating Oct 06, 2026, 09:33 AM UTC
Twilio customers may be experiencing SMS delivery delays and SMS delivery receipt delays from Twilio to Chunghwa Telecom network subscribers in Taiwan. 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 06, 2026, 09:39 AM UTC
Twilio customers may be experiencing SMS delivery delays and SMS delivery receipt delays from Twilio to Chunghwa Telecom network subscribers in Taiwan. 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 06, 2026, 10:42 AM UTC
Twilio customers may be experiencing SMS delivery delays and SMS delivery receipt delays from Twilio to Chunghwa Telecom network subscribers in Taiwan. 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.
- monitoring Oct 06, 2026, 11:13 AM UTC
We have observed a recovery in SMS delivery and delivery receipts from Twilio to Chunghwa Telecom network subscribers in Taiwan and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
- monitoring Oct 06, 2026, 01:16 PM UTC
We have observed a recovery in SMS delivery and delivery receipts from Twilio to Chunghwa Telecom network subscribers in Taiwan and are monitoring service stability. We will provide another update in 4 hours or as soon as more information becomes available.
- resolved Oct 06, 2026, 03:02 PM UTC
The incident has been resolved and SMS delivery and delivery receipts from Twilio to Chunghwa Telecom network subscribers in Taiwan are operating normally.