SMS Delivery Receipt Delays from Twilio to Chunghwa Telecom Taiwan

Incident Report for Twilio

Resolved

The incident has been resolved and SMS delivery receipts from Twilio to Chunghwa Telecom network subscribers in Taiwan are operating normally.

Posted Sep 16, 2026 - 15:22 PDT

Monitoring

We have observed a recovery in SMS 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.

Posted Sep 16, 2026 - 13:22 PDT

Identified

Twilio customers may be experiencing 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.

Posted Sep 16, 2026 - 12:20 PDT

Update

Twilio customers may be experiencing 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 2 hours or as soon as more information becomes available.

Posted Sep 16, 2026 - 12:10 PDT

Investigating

Twilio customers may be experiencing SMS delivery delays from Twilio to Chunghwa Telecom network subscribers in Taiwan. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.

Posted Sep 16, 2026 - 11:57 PDT

This incident affected: CARRIER NETWORK (SMS, APAC).