# Webhooks event types (/platform/developer/webhooks/event-types)

Learn more about the types of events that Novu sends webhook events for.

Novu supports the following webhook event types:

* **Message events**: Events about message delivery status changes.
* **Preference event**: Event about subscriber preference changes.
* **Workflow events**: Events about workflow creation, updates, and deletions.

Each event includes detailed information about the affected resource and the changes that occurred.

## Message events

* `message.archived`: This webhook is triggered when a subscriber archives a message. The payload contains the details of the event.
* `message.delivered`: This webhook is triggered when a message delivery provider acknowledged the message delivery to the end receiving client. The payload contains the details of the event.
* `message.failed`: This webhook is triggered when Novu tries to send the message to the delivery provider and it got failed. The payload contains the details of the event.
* `message.read`: This webhook is triggered when a message has been read by the subscriber. The payload contains the details of the event.
* `message.seen`: This webhook is triggered when a subscriber opens a message. The payload contains the details of the event.
* `message.sent`: This webhook is triggered when Novu sends the message to the delivery provider. The payload contains the details of the event.
* `message.snoozed`: This webhook is triggered when a message is snoozed by the subscriber. The payload contains the details of the event.
* `message.unarchived`: This webhook is triggered when an archived message is unarchived. The payload contains the details of the event.
* `message.unread`: This webhook is triggered when a message is unread or marked as unread by the subscriber. The payload contains the details of the event.
* `message.unsnoozed`: This webhook is triggered when a message is unsnoozed by a subscriber. The payload contains the details of the event.

## Preference event

* `preference.updated`: This webhook is triggered when a subscriber preference is updated. The payload contains the details of the event.

## Workflow events

* `workflow.created`: This webhook is triggered when a workflow is created. The payload contains the details of the event.
* `workflow.deleted`: This webhook is triggered when a workflow is deleted. The payload contains the details of the event.
* `workflow.published`: This webhook is triggered when a `workflow` event occurs, that is when a workflow is synced from dev to prod environment. The payload contains the details of the event.
* `workflow.updated`: This webhook is triggered when a workflow is updated. The payload contains the details of the event.