# Update Domain

## Path Parameters

The Domain ID.

## Body Parameters

Track clicks within the body of each HTML email.

:::callout{intent="info"}
This setting is only applied if a `tracking_subdomain` is configured and verified.
:::

Track the open rate of each email.

:::callout{intent="info"}
This setting is only applied if a `tracking_subdomain` is configured and verified.
:::

Configure a custom subdomain for click and open tracking. For example, setting
`"links"` on domain `example.com` will produce a CNAME record for
`links.example.com`. Avoid setting values that have a negative connotation (e.g. `tracking`).

This value can only be changed after it has been specified, never removed. This is to preserve any email links that
may already be sent with the current tracking subdomain.

After changing the tracking subdomain, a new DNS record must be verified, until then, the previous value is used.
Do not remove old tracking DNS records, all previously used records remain active and are included in the response.

Learn more about [custom tracking subdomains](/guides/learn-dashboard-domains-tracking).

- `tls` (string)

  - `opportunistic`: Opportunistic TLS means that it always attempts to make a
    secure connection to the receiving mail server. If it can't establish a
    secure connection, it sends the message unencrypted.

  - `enforced`: Enforced TLS on the other hand, requires that the email
    communication must use TLS no matter what. If the receiving server does
    not support TLS, the email will not be sent.

- `capabilities` (object) — Update the domain capabilities for sending and receiving emails. You can specify one or both fields. Omitted fields will keep their current value. At least one capability must remain enabled.

  :::accordion{title="properties"}
  - `sending` (string) — Enable or disable sending emails from this domain. Possible values: `'enabled' | 'disabled'`

  - `receiving` (string) — Enable or disable receiving emails to this domain. Possible values: `'enabled' | 'disabled'`
  :::

:::code-group
```ts Node.js
import { Resend } from 'resend';

const resend = new Resend('re_xxxxxxxxx');

const { data, error } = await resend.domains.update({
  id: 'b8617ad3-b712-41d9-81a0-f7c3d879314e',
  openTracking: false,
  clickTracking: true,
  trackingSubdomain: 'links',
  tls: 'enforced',
});
```

```php PHP
$resend = Resend::client('re_xxxxxxxxx');

$resend->domains->update(
  'b8617ad3-b712-41d9-81a0-f7c3d879314e',
  [
    'open_tracking' => false,
    'click_tracking' => true,
    'tracking_subdomain' => 'links',
    'tls' => 'enforced',
  ]
);
```

```python Python
import resend

resend.api_key = "re_xxxxxxxxx"

params: resend.Domains.UpdateParams = {
  "id": "b8617ad3-b712-41d9-81a0-f7c3d879314e",
  "open_tracking": False,
  "click_tracking": True,
  "tracking_subdomain": "links",
  "tls": "enforced",
}

resend.Domains.update(params)
```

```ruby Ruby
require "resend"

Resend.api_key = "re_xxxxxxxxx"

Resend::Domains.update({
  id: "b8617ad3-b712-41d9-81a0-f7c3d879314e",
  open_tracking: false,
  click_tracking: true,
  tracking_subdomain: "links",
  tls: "enforced",
})
```

```go Go
package main

import "github.com/resend/resend-go/v4"

func main() {
	client := resend.NewClient("re_xxxxxxxxx")

	updateDomainParams := &resend.UpdateDomainRequest{
		OpenTracking:      false,
		ClickTracking:     true,
		TrackingSubdomain: "links",
		Tls:               resend.Enforced,
	}

	client.Domains.Update("b8617ad3-b712-41d9-81a0-f7c3d879314e", updateDomainParams)
}
```

```rust Rust
use resend_rs::{types::{DomainChanges, Tls}, Resend, Result};

#[tokio::main]
async fn main() -> Result<()> {
  let resend = Resend::new("re_xxxxxxxxx");

  let changes = DomainChanges::new()
    .with_open_tracking(false)
    .with_click_tracking(true)
    .with_tracking_subdomain("links")
    .with_tls(Tls::Enforced);

  let _domain = resend
    .domains
    .update("b8617ad3-b712-41d9-81a0-f7c3d879314e", changes)
    .await?;

  Ok(())
}
```

```java Java
import com.resend.Resend;
import com.resend.services.domains.model.Tls;
import com.resend.services.domains.model.UpdateDomainOptions;

Resend resend = new Resend("re_xxxxxxxxx");

UpdateDomainOptions params = UpdateDomainOptions.builder()
                .id("b8617ad3-b712-41d9-81a0-f7c3d879314e")
                .openTracking(false)
                .clickTracking(true)
                .trackingSubdomain("links")
                .tls(Tls.ENFORCED)
                .build();

resend.domains().update(params);
```

```csharp .NET
using Resend;

IResend resend = ResendClient.Create( "re_xxxxxxxxx" ); // Or from DI

await resend.DomainUpdateAsync(
    new Guid( "b8617ad3-b712-41d9-81a0-f7c3d879314e" ),
    new DomainUpdateData()
    {
        TrackOpen = false,
        TrackClicks = true,
        TrackingSubdomain = "links",
        TlsMode = TlsMode.Enforced,
    }
);
```

```bash cURL
curl -X PATCH 'https://api.resend.com/domains/b8617ad3-b712-41d9-81a0-f7c3d879314e' \
     -H 'Authorization: Bearer re_xxxxxxxxx' \
     -H 'Content-Type: application/json' \
     -d $'{
  "open_tracking": false,
  "click_tracking": true,
  "tracking_subdomain": "links",
  "tls": "enforced"
}'
```

```bash CLI
resend domains update b8617ad3-b712-41d9-81a0-f7c3d879314e \
  --no-open-tracking \
  --click-tracking \
  --tracking-subdomain links \
  --tls enforced
```
:::

:::code-group
```json Response
{
  "object": "domain",
  "id": "b8617ad3-b712-41d9-81a0-f7c3d879314e"
}
```
:::

## Related pages

- [Account Management](./account-management-index.md)
- [API Keys](./api-keys-2-index.md)
- [API Keys](./api-keys-index.md)
- [API Reference](./api-reference-index.md)
- [AudiencesDEPRECATED](./audiencesdeprecated-index.md)
- [Authorized Apps](./authorized-apps-index.md)
- [Automations](./automations-index.md)
- [Broadcasts](./broadcasts-index.md)
- [Build with AI](./build-with-ai-index.md)
- [Changelog](../changelog.md)

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