Resend incident

Test domain resend.dev failing test emails

Resolved after 6 hours 25 minutes, affecting Batch Emails and General API and 1 more, on July 30, 2026.

resolved Jul 30, 2026, 04:23 PM UTC

We have resolved the underlying issue, and sending test emails from resend.dev: http://resend.dev has resumed.

Started
Jul 30, 2026, 09:58 AM UTC
Resolved
Jul 30, 2026, 04:23 PM UTC
Duration
6h 25m
Detected by Pingoru
Jul 30, 2026, 09:58 AM UTC

Affected components

Batch EmailsGeneral APIEmail EventsWebhooksWebsiteDashboardSingle EmailSMTPBroadcast EmailsAutomations

Update timeline

  1. identified Jul 30, 2026, 09:58 AM UTC

    Performance degradation when sending test emails from the resend.dev: http://resend.dev domain, which is causing the API to return a validation error stating that the domain is not verified.

  2. resolved Jul 30, 2026, 04:23 PM UTC

    We have resolved the underlying issue, and sending test emails from resend.dev: http://resend.dev has resumed.

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