email.deliverydelayed

Provider delivery delay notification received.

Raw markdown

When it is emitted

SES/SNS lifecycle ingestion normalizes provider DeliveryDelay events to email.delivery_delayed.

Payload

OpenSend sends this event in the standard webhook envelope:

json

{
  "id": "whd_delivery-id_1",
  "type": "email.delivery_delayed",
  "created_at": "2026-05-10T00:00:00.000Z",
  "data": {}
}

Use this event for delayed-delivery visibility. It is not a final failure; wait for delivered, bounced, complained, or failed follow-up events.

Handling guidance

Verify svix-id, svix-timestamp, and svix-signature before processing. Store idempotency by delivery ID or by the domain/email/contact ID in data so retries and replays do not duplicate downstream side effects.