> ## Documentation Index
> Fetch the complete documentation index at: https://developers.1-funnel.org/llms.txt
> Use this file to discover all available pages before exploring further.

# Supported events

> The nine approved outbound webhook event types.

<Warning>
  **Developer Preview**

  This documentation describes the upcoming 1Funnel External Integration API.

  The documented API endpoints and authentication services are not yet available
  for public integration.

  You can explore the API specifications, request and response schemas, webhook
  events, and integration guides.

  Sandbox and production availability will be announced separately.
</Warning>

| Event type | Meaning |
| - | - |
| `sms.message.sent.v1` | Provider submission accepted |
| `sms.message.delivered.v1` | Delivery outcome |
| `sms.message.failed.v1` | Terminal failure display status |
| `sms.bulk-message.processing.v1` | Bulk entered processing |
| `sms.bulk-message.completed.v1` | Bulk processing completed (not all delivered) |
| `sms.bulk-message.failed.v1` | Bulk processing failed |
| `otp.challenge.verified.v1` | Challenge verified |
| `otp.challenge.expired.v1` | Challenge expired |
| `otp.challenge.locked.v1` | Challenge locked |

See [Event payload reference](/api-reference/events/overview).


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