## Create a sending subdomain

`client.emailSending.subdomains.create(SubdomainCreateParamsparams, RequestOptionsoptions?): SubdomainCreateResponse`

**post** `/zones/{zone_id}/email/sending/subdomains`

Creates a new sending subdomain or re-enables sending on an existing subdomain that had it disabled. If zone-level Email Sending has not been enabled yet, the zone flag is automatically set when the entitlement is present.

### Parameters

- `params: SubdomainCreateParams`

  - `zone_id: string`

    Path param: Identifier.

  - `name: string`

    Body param: The subdomain name. Must be within the zone.

### Returns

- `SubdomainCreateResponse`

  - `email_sending_enabled: boolean`

    Whether Email Sending is enabled on this subdomain.

  - `name: string`

    The subdomain domain name.

  - `tag: string`

    Sending subdomain identifier.

  - `created?: string`

    The date and time the destination address has been created.

  - `email_sending_dkim_selector?: string`

    The DKIM selector used for email signing.

  - `email_sending_return_path_domain?: string`

    The return-path domain used for bounce handling.

  - `enabled?: boolean`

    Whether Email Routing (receiving) is enabled on this subdomain. Read-only; included for informational purposes since both services share the subdomain row.

  - `modified?: string`

    The date and time the destination address was last modified.

### Example

```node
import Cloudflare from 'cloudflare';

const client = new Cloudflare({
  apiEmail: process.env['CLOUDFLARE_EMAIL'], // This is the default and can be omitted
  apiKey: process.env['CLOUDFLARE_API_KEY'], // This is the default and can be omitted
});

const subdomain = await client.emailSending.subdomains.create({
  zone_id: '023e105f4ecef8ad9ca31a8372d0c353',
  name: 'sub.example.com',
});

console.log(subdomain.email_sending_enabled);
```

#### Response

```json
{
  "errors": [
    {
      "code": 1000,
      "message": "message",
      "documentation_url": "documentation_url",
      "source": {
        "pointer": "pointer"
      }
    }
  ],
  "messages": [
    {
      "code": 1000,
      "message": "message",
      "documentation_url": "documentation_url",
      "source": {
        "pointer": "pointer"
      }
    }
  ],
  "success": true,
  "result": {
    "email_sending_enabled": true,
    "name": "sub.example.com",
    "tag": "aabbccdd11223344aabbccdd11223344",
    "created": "2014-01-02T02:20:00Z",
    "email_sending_dkim_selector": "cf-bounce",
    "email_sending_return_path_domain": "cf-bounce.sub.example.com",
    "enabled": true,
    "modified": "2014-01-02T02:20:00Z"
  }
}
```