> ## Documentation Index
> Fetch the complete documentation index at: https://docs.heyy.io/llms.txt
> Use this file to discover all available pages before exploring further.

# message.sent

> Occurs when a new outbound message is created and sent from Heyy.

Event triggered when a **new outbound message** is created and sent from Heyy (by an agent, automation, or API call).

## Payload fields

<MessageWebhookPayloadFields />

<ResponseExample>
  ```json theme={null}
  {
    "id": "d4e5f6a7-b8c9-4d0e-1f2a-3b4c5d6e7f8a",
    "tenantId": "a98d0e1f2-a1b4-4c4d-6e7f-8a9b0c1d2e3f",
    "event": "message.sent",
    "data": {
      "id": "e5f6a7b8-c9d0-4e1f-2a3b-4c5d6e7f8a9b",
      "type": "message",
      "sender": "outbound",
      "sources": [
        {
          "type": "inbox",
          "userId": "b8c9d0e1-f2a3-4b4c-5d6e-7f8a9b0c1d2e"
        }
      ],
      "status": "pending",
      "scheduledAt": null,
      "content": {
        "body": "Hello world"
      },
      "forwarded": false,
      "reactions": [],
      "errors": [],
      "history": [],
      "vendorId": "2847123456789012345",
      "timestamp": "2026-03-13T23:15:25.166Z",
      "vendorDetails": null,
      "isSensitive": false,
      "aiGenerationId": null,
      "metadata": {},
      "chat": {
        "id": "5f3700cd-a5cf-4b2b-be5a-23b013025c11"
      },
      "handle": {
        "id": "1a9559d7-3c53-4cd5-a076-962193b206e9",
        "type": "phone_number",
        "value": "+12135550123"
      },
      "contact": {
        "id": "259c9fec-c831-41ad-8a43-3fdad389d015",
        "firstName": "John",
        "lastName": "Doe",
        "phoneNumber": "+12135550123",
        "email": "john@example.com"
      },
      "channel": {
        "id": "h9dd4c3e-b049-4903-b047-e2717f1e88e3",
        "type": "whatsapp",
        "name": "Examply"
      }
    }
  }
  ```
</ResponseExample>