v4

OpenAPI 3.1.02026-07-3163216290.7 KB

Webhooks

Contact subscribed to mailing list

Sent when a contact is subscribed to a mailing list. Contains contactIdentity and mailingList objects. When double opt-in is enabled, this event only fires after the contact confirms their subscription.

postWebhookcontactMailingListSubscribed

Headers

webhook-idstring required

Unique message ID. Use to deduplicate deliveries.

webhook-timestampstring required

Unix timestamp of when the message was sent.

webhook-signaturestring required

HMAC signature for verifying the request. Verify using your endpoint signing secret from the Loops dashboard.

Payload

eventName'contact.mailingList.subscribed' required

eventTimeinteger required

Unix timestamp in seconds.

webhookSchemaVersion'1.0.0' required

Response

Webhook received successfully. Return any 2xx status code to acknowledge delivery.