BlogResend Webhooks

How to Test Resend Webhooks

Resend webhooks notify your application about email delivery events including sends, deliveries, opens, clicks, and bounces.

Resend Official Webhook Docs

1. Resend Webhook Events

Resend can send the following webhook events to your endpoint:

email.sent
email.delivered
email.delivery_delayed
email.bounced
email.complained
email.opened
email.clicked

2. Set Up a Test Endpoint with HookRay

Follow these steps to start receiving Resend webhooks for testing:

  1. Go to HookRay and click "Start Testing — Free" to get your unique webhook URL.
  2. Copy the URL (e.g., https://h.hookray.com/abc123).
  3. In your Resend dashboard, navigate to the webhook settings and paste the HookRay URL as your endpoint.
  4. Select the events you want to receive (see list above).
  5. Trigger a test event — HookRay will show the incoming webhook in real-time.

3. Sample Resend Webhook Payload

Here's an example of what a Resend webhook payload looks like:

payload.json
{
  "type": "email.delivered",
  "created_at": "2026-03-20T13:00:00.000Z",
  "data": {
    "email_id": "re_abc123xyz",
    "from": "team@hookray.com",
    "to": [
      "user@example.com"
    ],
    "subject": "Your webhook test results"
  }
}

4. Common Issues & Troubleshooting

Webhook not arriving?

Check that your endpoint URL is correct and publicly accessible. Resend cannot reach localhost URLs — use HookRay's cloud URL instead.

Getting 400 or 500 errors?

HookRay accepts any payload and returns 200 OK by default, so the issue is likely on Resend's side. Check your webhook configuration and event selection.

Need to verify webhook signatures?

Resend signs webhook requests for security. Use HookRay to capture the raw headers and body, then implement signature verification in your application code.

5. Next Steps

  • Use HookRay's webhook replay feature to re-send captured webhooks while building your handler
  • Enable smart parsing (Pro plan) to see Resend-specific fields highlighted automatically
  • Check the Resend webhook documentation for the complete event reference

Ready to test Resend webhooks?

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