email.delivery_delayed

When it fires

email.delivery_delayed fires when Amazon SES reports a temporary delivery problem, such as a full mailbox or a mail server that is not answering. SES keeps trying, so an email.delivered or email.bounced event usually follows. Do not send another copy. Opensend emits one event per delayed recipient; data.to holds only that recipient.

Payload

{
  "type": "email.delivery_delayed",
  "created_at": "2026-09-29T10:00:00.000Z",
  "data": {
    "created_at": "2026-09-29T09:59:59.000Z",
    "email_id": "YOUR_EMAIL_ID",
    "message_id": "SES_MESSAGE_ID",
    "from": "hello@example.com",
    "to": ["you@example.net"],
    "subject": "Welcome",
    "tags": {}
  }
}

The data fields are the common email fields described in email.sent.

Handle the event

Verify the signature and deduplicate by svix-id.