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

# Associate Untracked Reply to Lead

> Link an untracked reply to a campaign lead so it shows as that lead's reply in the Master Inbox

<Note>
  Get `untrackedReplyId` from [Get Untracked Replies](/api-reference/inbox/get-untracked), and `leadMapId` (the lead's campaign mapping ID) from the campaign's leads. Once linked, the untracked reply is processed as the lead's reply and removed from untracked replies.
</Note>

## Query Parameters

<ParamField query="api_key" type="string" required>
  Your SmartLead API key
</ParamField>

## Request Body

<ParamField body="emailCampaignId" type="number" required>
  Campaign ID (minimum: 1)
</ParamField>

<ParamField body="leadMapId" type="number" required>
  The lead's campaign mapping ID in that campaign (minimum: 1)
</ParamField>

<ParamField body="untrackedReplyId" type="string" required>
  Untracked reply ID
</ParamField>

<RequestExample>
  ```bash cURL theme={null}
  curl -X POST "https://server.smartlead.ai/api/v1/master-inbox/untracked-replies/associate-to-lead?api_key=YOUR_KEY" \
    -H "Content-Type: application/json" \
    -d '{"emailCampaignId": 123, "leadMapId": 987654, "untrackedReplyId": "3f1c2d4e-5a6b-7c8d-9e0f-112233445566"}'
  ```

  ```python Python theme={null}
  import requests

  response = requests.post(
      "https://server.smartlead.ai/api/v1/master-inbox/untracked-replies/associate-to-lead",
      params={"api_key": "YOUR_API_KEY"},
      json={
          "emailCampaignId": 123,
          "leadMapId": 987654,
          "untrackedReplyId": "3f1c2d4e-5a6b-7c8d-9e0f-112233445566"
      }
  )
  print(response.json())
  ```
</RequestExample>

## Response Example

<ResponseExample>
  ```json 200 theme={null}
  {
    "sucess": true,
    "message": "Untracked reply associated to lead successfully",
    "data": {
      "leadMapId": 987654,
      "swMessageId": "<abc123@mail.yourdomain.com>"
    }
  }
  ```

  ```json 404 - Campaign not found theme={null}
  {
    "error": "Campaign not found - Invalid emailCampaignId."
  }
  ```

  ```json 404 - Lead not in campaign theme={null}
  {
    "error": "Lead not found in campaign - Invalid leadMapId."
  }
  ```

  ```json 404 - Reply not found theme={null}
  {
    "error": "Untracked reply not found - Invalid untrackedReplyId."
  }
  ```

  ```json 400 - No sent email for the lead theme={null}
  {
    "error": "No sent email found for this lead in the campaign"
  }
  ```
</ResponseExample>

<Note>
  The success response spells the flag `sucess`.
</Note>