Webhook Events

Message delivered event

Fired when an outgoing message is delivered to the recipient. Supported on WhatsApp and Facebook Messenger.

postWebhookmessage.delivered

Payload

idstring required

event'message.delivered' | 'message.read' | 'message.failed' required

statusAtstring date-time required

When the platform reported this status.

timestampstring date-time required

UTC time at which Zernio generated this event (set once when the event payload is built, before delivery is queued). Retries and redeliveries keep the original value, so it reflects the event, not the delivery attempt.

Response

Webhook received successfully

Changes

Webhooks have no change history: a webhook is keyed by its event name rather than a path and method, so no recorded change can name it.