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Custom tracking domains failing to provision for new customers

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Timeline

Incident updates

Every update Resend posted, oldest to newest, exactly as it appeared on their official status page.

  1. Investigating

    Since 09:45 UTC on May 5, 2026, new customers are unable to create custom tracking domains. Existing tracking domains and email sending are not affected.

    We've identified the cause as an upstream infrastructure limit and are working with our provider to resolve it.

  2. Monitoring

    Issue identified and resolved for new requests.

    New customers can now create custom tracking domains again. We're replaying the failed provisioning requests from the outage window. This may take some time to fully process.

  3. Resolved

    This incident is resolved. All failed provisioning requests have been reprocessed, and custom tracking domain creation is operating normally.

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