# verify_tracking_domain (/docs/mcp/tools/verify-tracking-domain)

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**Verify a tracking domain** · Changes data · Acts outside your account

Checks that a mailbox's custom tracking domain has its CNAME record set, so open and click tracking links use your own domain. Returns what is missing when it is not set.

| Connection | Account URL, team member URL or OAuth |
| --- | --- |

## Parameters [#parameters]

| Parameter | Type | Required | Description |
| --- | --- | --- | --- |
| `websiteId` | `string` | Yes | Website ID from list_websites. |
| `emailAccountId` | `string` | Yes | _id of the mailbox from list_email_accounts. |
| `customDomain` | `string` | Yes | The tracking domain, e.g. track.yourdomain.com. |

## Tool definition [#tool-definition]

What your assistant receives from `tools/list`:

```json
{
  "name": "verify_tracking_domain",
  "title": "Verify a tracking domain",
  "annotations": {
    "title": "Verify a tracking domain",
    "readOnlyHint": false,
    "destructiveHint": false,
    "idempotentHint": true,
    "openWorldHint": true
  },
  "inputSchema": {
    "type": "object",
    "properties": {
      "websiteId": {
        "type": "string",
        "description": "Website ID from list_websites."
      },
      "emailAccountId": {
        "type": "string",
        "description": "_id of the mailbox from list_email_accounts."
      },
      "customDomain": {
        "type": "string",
        "description": "The tracking domain, e.g. track.yourdomain.com."
      }
    },
    "required": [
      "websiteId",
      "emailAccountId",
      "customDomain"
    ]
  }
}
```