Twilio incident

SMS Delivery Delays and Failures from a Subset of Twilio Phone Numbers to Rakuten Japan

Minor Resolved View vendor source →

Twilio experienced a minor incident on May 29, 2026 affecting SMS, APAC, lasting 5h 2m. The incident has been resolved; the full update timeline is below.

Started
May 29, 2026, 02:49 AM UTC
Resolved
May 29, 2026, 07:52 AM UTC
Duration
5h 2m
Detected by Pingoru
May 29, 2026, 02:49 AM UTC

Affected components

SMS, APAC

Update timeline

  1. investigating May 29, 2026, 02:49 AM UTC

    Twilio customers may be experiencing SMS delivery delays and failures from a subset of Twilio Phone Numbers to Rakuten network subscribers in Japan. Our team is actively investigating this issue. We will provide another update in 1 hour or as soon as more information becomes available.

  2. identified May 29, 2026, 02:59 AM UTC

    Twilio customers may be experiencing SMS delivery delays and failures from a subset of Twilio Phone Numbers to Rakuten network subscribers in Japan. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 1 hour or as soon as more information becomes available.

  3. identified May 29, 2026, 04:00 AM UTC

    Twilio customers may be experiencing SMS delivery delays and failures from a subset of Twilio Phone Numbers to Rakuten network subscribers in Japan. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 2 hours or as soon as more information becomes available.

  4. identified May 29, 2026, 06:00 AM UTC

    Twilio customers may be experiencing SMS delivery delays and failures from a subset of Twilio Phone Numbers to Rakuten network subscribers in Japan. Our team has identified the cause, and is working to resolve the issue. We will provide another update in 4 hours or as soon as more information becomes available.

  5. monitoring May 29, 2026, 06:01 AM UTC

    We have observed a recovery in SMS delivery from a subset of Twilio Phone Numbers to Rakuten network subscribers in Japan and are monitoring service stability. We will provide another update in 2 hours or as soon as more information becomes available.

  6. resolved May 29, 2026, 07:52 AM UTC

    The incident has been resolved and SMS delivery from a subset of Twilio Phone Numbers to Rakuten network subscribers in Japan is operating normally.