`delivery.email_opened`

The notice e-mail was opened: the e-mail client loaded its image. A hint, never proof of receipt.

Receiving it

Subscribe a webhook endpoint to delivery.email_opened, or to every type. Check the Parasend-Signature header before you trust the request (see Receiving webhooks), answer 2xx quickly, and fetch the resource for its current state.

The event

{
  "id": "evt_01M6R27T08JTMBJ4B6GQP90838",
  "object": "event",
  "type": "delivery.email_opened",
  "created": "2026-11-06T09:15:05.604Z",
  "resource": {
    "type": "delivery",
    "id": "dlv_01M6R27T05512SCV3852TPM2XY"
  },
  "batch_id": null,
  "service_level": "standard",
  "reason": null,
  "data": null
}