> For the complete documentation index, see [llms.txt](https://wiki.mobivatebulksms.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://wiki.mobivatebulksms.com/optouts-management/delete-an-opt-out.md).

# Delete an Opt-Out

Remove a phone number from the opt-out list, allowing messages to be sent to the recipient again.

### <mark style="color:red;">`DELETE`</mark> `/addressbook/optouts/{msisdn}`

Replace `{msisdn}` with the phone number you want to remove from the opt-out list.

#### Required Permission

```
delete:Optouts
```

Your API key must have this permission enabled in order to use this endpoint.

#### Example Request

```bash
curl --location --request DELETE 'https://<hostname>/addressbook/optouts/55555555555' \
  --header 'Authorization: Bearer YOUR_API_KEY'
```

Replace `YOUR_API_KEY` with your API key.

{% hint style="info" %}
All endpoints shown in this documentation use a **sample base URL**. The production API endpoint is provided by our team upon request.
{% endhint %}

#### Success Response (HTTP 200)

```json
{
  "success": true
}
```

#### Not Found (HTTP 404)

Returned if the MSISDN is not present in the opt-out list.

```json
{
  "success": false,
  "error": "Opt-out record not found"
}
```

If you want to send to Opted-out phone numbers you can override this by using `excludeOptOuts`, where supported.

{% hint style="info" %}
Opt-outs are applied **globally** across all messaging endpoints.
{% endhint %}