Twilio incident
SMS Delivery Receipt Delays from a Subset of Twilio International Pre-Registered Sender IDs to Vinaphone Vietnam
Resolved after 3 hours 23 minutes, affecting SMS, APAC, on August 22, 2026.
The incident has been resolved and SMS delivery receipts from a subset of Twilio International Pre-Registered Sender IDs to Vinaphone network subscribers in Vietnam are operating normally.
Affected components
Update timeline
- investigating Aug 22, 2026, 03:43 AM UTC
Twilio customers may be experiencing SMS delivery receipt delays from a subset of Twilio International Pre-Registered Sender IDs to Vinaphone network subscribers in Vietnam. 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 Aug 22, 2026, 03:45 AM UTC
Twilio customers may be experiencing SMS delivery receipt delays from a subset of Twilio International Pre-Registered Sender IDs to Vinaphone network subscribers in Vietnam. 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 Aug 22, 2026, 04:46 AM UTC
Twilio customers may be experiencing SMS delivery receipt delays from a subset of Twilio International Pre-Registered Sender IDs to Vinaphone network subscribers in Vietnam. 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 Aug 22, 2026, 05:06 AM UTC
We have observed a recovery in SMS delivery receipts from a subset of Twilio International Pre-Registered Sender IDs to Vinaphone network subscribers in Vietnam and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.
- resolved Aug 22, 2026, 07:07 AM UTC
The incident has been resolved and SMS delivery receipts from a subset of Twilio International Pre-Registered Sender IDs to Vinaphone network subscribers in Vietnam are operating normally.
Your product runs on more than Twilio
Add the vendors you depend on and get one message when any of them reports trouble. Free for 3 vendors, no card.
Amazon Web Services