## Opt Out

**post** `/api/v2/contacts/opt-out`

Opt a contact out (or back in) from receiving messages. When a recipient is opted out,
outbound messages to that number will be blocked.

Pass `opted_out: false` to opt a contact back in.

### Body Parameters

- `number: string`

  Phone number in E.164 format

- `opted_out: optional boolean`

  Set to false to opt the contact back in (defaults to true)

### Returns

- `number: optional string`

  The normalized phone number

- `opted_out: optional boolean`

  The current opt-out status

- `status: optional string`

### Example

```http
curl https://api.sendblue.co/api/v2/contacts/opt-out \
    -H 'Content-Type: application/json' \
    -H "sb-api-key-id: $SENDBLUE_API_API_KEY" \
    -H "sb-api-secret-key: $SENDBLUE_API_API_SECRET" \
    -d '{
          "number": "+14155551234"
        }'
```