> ## Documentation Index
> Fetch the complete documentation index at: https://deepline.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Resend: Domains Update

> Update an existing domain. Includes SDK V2 and CLI requests, input constraints, response fields, and Deepline credit cost.

Update an existing domain.

> [!NOTE]
>
> Tool ID: `resend_domains_update`

## Run this action

Use the TypeScript SDK for one call. Use `ctx.tools.execute(...)` inside a Play for durable calls, scheduled calls, or CSV processing.

```ts theme={"languages":{"custom":["/languages/deepline-prompt.json"]}}
import { Deepline } from 'deepline';

const deepline = await Deepline.connect();
const result = await deepline.tools.execute(
  'resend_domains_update',
  {
    "domain_id": "example.com"
  },
);

console.log(result.toolResponse.raw);
```

### CLI

```bash theme={"languages":{"custom":["/languages/deepline-prompt.json"]}}
deepline run resend_domains_update --input '{
  "domain_id": "example.com"
}'
```

## Example response

The SDK returns this shape at `result.toolResponse.raw`. The example values illustrate the response.

```json theme={"languages":{"custom":["/languages/deepline-prompt.json"]}}
{
  "data": {
    "id": "id_123",
    "object": "example"
  }
}
```

Use `deepline describe resend_domains_update --json` for the latest machine-readable contract.

## Input reference

Update an existing domain

| Name | Type | Required | Default | Details |
| - | - | - | - | - |
| `payload.domain_id` | `string` | Yes | — | The ID of the domain. |
| `payload.open_tracking` | `boolean` | No | — | Track the open rate of each email. |
| `payload.click_tracking` | `boolean` | No | — | Track clicks within the body of each HTML email. |
| `payload.tls` | `"opportunistic" \| "enforced"` | No | `"opportunistic"` | enforced \| opportunistic. Allowed: `opportunistic`, `enforced`. |
| `payload.capabilities` | `object` | No | — | Configure the domain capabilities for sending and receiving emails. At least one capability must be enabled. |
| `payload.tracking_subdomain` | `string` | No | — | The subdomain to use for click and open tracking. |

<details>
  <summary>Show raw input schema</summary>

  ### Input JSON Schema

  ```json theme={"languages":{"custom":["/languages/deepline-prompt.json"]}}
  {
    "type": "object",
    "description": "Update an existing domain",
    "properties": {
      "domain_id": {
        "type": "string",
        "description": "The ID of the domain."
      },
      "open_tracking": {
        "type": "boolean",
        "description": "Track the open rate of each email."
      },
      "click_tracking": {
        "type": "boolean",
        "description": "Track clicks within the body of each HTML email."
      },
      "tls": {
        "type": "string",
        "description": "enforced | opportunistic.",
        "default": "opportunistic",
        "enum": [
          "opportunistic",
          "enforced"
        ]
      },
      "capabilities": {
        "type": "object",
        "description": "Configure the domain capabilities for sending and receiving emails. At least one capability must be enabled.",
        "properties": {
          "sending": {
            "type": "string",
            "description": "Enable or disable sending emails from this domain.",
            "enum": [
              "enabled",
              "disabled"
            ]
          },
          "receiving": {
            "type": "string",
            "description": "Enable or disable receiving emails to this domain.",
            "enum": [
              "enabled",
              "disabled"
            ]
          }
        },
        "additionalProperties": false
      },
      "tracking_subdomain": {
        "type": "string",
        "description": "The subdomain to use for click and open tracking."
      }
    },
    "required": [
      "domain_id"
    ],
    "additionalProperties": false
  }
  ```
</details>

## Output reference

Standard tool result payload.

| Name | Type | Required | Default | Details |
| - | - | - | - | - |
| `result.data` | `object` | Yes | — | Provider response payload. |
| `result.data.id` | `string` | No | — | The ID of the updated domain. |
| `result.data.object` | `string` | No | — | The object type representing the updated domain. |
| `result.meta` | `object` | No | — | Additional response metadata (status, paging). |

<details>
  <summary>Show raw output schema</summary>

  ### Output JSON Schema

  ```json theme={"languages":{"custom":["/languages/deepline-prompt.json"]}}
  {
    "type": "object",
    "description": "Standard tool result payload.",
    "properties": {
      "data": {
        "type": "object",
        "description": "Provider response payload.",
        "properties": {
          "id": {
            "type": "string",
            "description": "The ID of the updated domain."
          },
          "object": {
            "type": "string",
            "description": "The object type representing the updated domain."
          }
        },
        "additionalProperties": false
      },
      "meta": {
        "type": "object",
        "description": "Additional response metadata (status, paging).",
        "additionalProperties": true
      }
    },
    "required": [
      "data"
    ],
    "additionalProperties": false
  }
  ```
</details>

## Deepline cost

* Pricing model: `fixed` (per call).
* Estimated Deepline credits: `0` per pricing unit.
* Provider-native pricing may still exist outside Deepline credit billing.

## Related documentation

* [Connect integrations](https://deepline.com/docs/integrations.md)
* [SDK V2 quickstart](https://deepline.com/docs/sdk-v2/quickstart.md)
* [SDK reference](https://deepline.com/docs/sdk-v2/sdk-reference.md)
* [Run tools across a CSV](https://deepline.com/docs/sdk-v2/batch-csv.md)


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