Twilio incident

SMS Delivery Receipt Delays from a Subset of Twilio International Pre-Registered Sender IDs to Vinaphone Vietnam

Minor Resolved View vendor source →

Twilio experienced a minor incident on August 22, 2026 affecting SMS, APAC, lasting 3h 23m. The incident has been resolved; the full update timeline is below.

Started
Aug 22, 2026, 03:43 AM UTC
Resolved
Aug 22, 2026, 07:07 AM UTC
Duration
3h 23m
Detected by Pingoru
Aug 22, 2026, 03:43 AM UTC

Affected components

SMS, APAC

Update timeline

  1. 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.

  2. 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.

  3. 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.

  4. 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.

  5. 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.