Twilio incident: WhatsApp Sandbox Message Processing Issues

Affected components

• WhatsApp Messaging

1. resolvedOct 12, 2026, 07:19 UTC

   WhatsApp Sandbox message processing has been fully restored, and system performance has returned to normal. Our engineers have verified the resolution, and this incident is now resolved.

2. monitoringOct 12, 2026, 06:18 UTC

   Our engineers have mitigated the issue and are monitoring system performance. WhatsApp Sandbox message processing has been restored and the service is returning to normal. We will provide another update in 2 hours or as soon as more information becomes available.

3. monitoringOct 12, 2026, 06:13 UTC

   Our engineers have mitigated the issue and are monitoring system performance. WhatsApp Sandbox message processing is returning to normal, and recent validation checks indicate the service is recovering. We will provide another update in 2 hours or as soon as more information becomes available.

4. identifiedOct 12, 2026, 05:34 UTC

   We have identified the issue of message processing failures for WhatsApp Sandbox. Customers using WhatsApp Try Out may be unable to interact with the Sandbox while we work to restore normal functionality. We will provide another update in 2 hours or as soon as more information becomes available.

5. identifiedOct 12, 2026, 04:32 UTC

   We have identified the issue of message processing failures for WhatsApp Sandbox. Customers using WhatsApp Try Out may be unable to interact with the Sandbox environment, and some requests may return HTTP 404 status codes. We are working toward a fix. We will provide another update in 1 hour or as soon as more information becomes available.

6. identifiedOct 12, 2026, 04:31 UTC

   We have identified the issue of message processing failures for WhatsApp Sandbox. Customers using WhatsApp Try Out may be unable to interact with the sandbox sender at this time, and we are working toward a fix. We will provide another update in 1 hour or as soon as more information becomes available.

7. investigatingOct 12, 2026, 03:24 UTC

   We are investigating an issue with WhatsApp Sandbox. Users may experience messages not being processed in the sandbox environment. We will provide another update in 1 hour or as soon as more information becomes available.

What APIStatus.watch saw

Our 5-minute checks didn't record a change in Twilio's overall status around this incident. Smaller or regional incidents often leave a provider's overall status green.

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Twilio reported 496 incidents in the last 90 days, 2 of them major or critical. A typical incident lasted 5h 54m. See Twilio's uptime and incident history