## Create a sending subdomain

`client.EmailSending.Subdomains.New(ctx, params) (*SubdomainNewResponse, error)`

**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 SubdomainNewParams`

  - `ZoneID param.Field[string]`

    Path param: Identifier.

  - `Name param.Field[string]`

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

### Returns

- `type SubdomainNewResponse struct{…}`

  - `EmailSendingEnabled bool`

    Whether Email Sending is enabled on this subdomain.

  - `Name string`

    The subdomain domain name.

  - `Tag string`

    Sending subdomain identifier.

  - `Created Time`

    The date and time the destination address has been created.

  - `EmailSendingDKIMSelector string`

    The DKIM selector used for email signing.

  - `EmailSendingReturnPathDomain string`

    The return-path domain used for bounce handling.

  - `Enabled bool`

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

  - `Modified Time`

    The date and time the destination address was last modified.

### Example

```go
package main

import (
  "context"
  "fmt"

  "github.com/cloudflare/cloudflare-go"
  "github.com/cloudflare/cloudflare-go/email_sending"
  "github.com/cloudflare/cloudflare-go/option"
)

func main() {
  client := cloudflare.NewClient(
    option.WithAPIKey("144c9defac04969c7bfad8efaa8ea194"),
    option.WithAPIEmail("user@example.com"),
  )
  subdomain, err := client.EmailSending.Subdomains.New(context.TODO(), email_sending.SubdomainNewParams{
    ZoneID: cloudflare.F("023e105f4ecef8ad9ca31a8372d0c353"),
    Name: cloudflare.F("sub.example.com"),
  })
  if err != nil {
    panic(err.Error())
  }
  fmt.Printf("%+v\n", subdomain.EmailSendingEnabled)
}
```

#### 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"
  }
}
```