---
title: "Add email address to BoxTrapper blocked senders"
method: GET
path: "/BoxTrapper/blacklist_messages"
tags: ["BoxTrapper", "Spam Prevention (BoxTrapper)"]
---

# Add email address to BoxTrapper blocked senders

`GET /BoxTrapper/blacklist_messages`

This function blacklists email message senders.

**Important:**

  When you disable the [Receive Mail](https://go.cpanel.net/serverroles) role, the system disables this function.

## Query parameters

- `email` string, email, required
- `queuefile` string, required

## Response `200`

HTTP Request was successful.

- object
  - `apiversion` integer — The version of the API.
  - `func` string — The name of the method called.
  - `module` string — The name of the module called.
  - `result` object
    - `data` object[] — An array of objects of blacklisted email information.
      - `email` string, email — The email address that sent the blacklisted message.
      - `failed` 1 — Whether the system failed to blacklist the message. **Note:** The function only returns this value if it doesn't blacklist the message.
      - `matches` string[] — An array of messages that the system deleted.
      - `operator` 'blacklist' — The action that the function performed.
      - `reason` string — A message about the failure or the warning. **Note:** The function only returns this value if it doesn't delete the message or experiences issues when it deletes the message.
      - `warning` 1 — Whether the system experienced issues when it blacklisted the message. **Note:** The function only returns this value if it doesn't blacklist the message.
    - `errors` string[], nullable — List of errors if the API failed.
    - `messages` string[], nullable — List of messages generated by the API.
    - `metadata` object
      - `transformed` 1 — Post-processing may have transformed the data.
    - `status` 0 | 1 — - 1 - Success. - 0 - Failed. Check the `errors` field for more details.
    - `warnings` string[], nullable — List of warnings generated by the API. Warnings describe non-critical failures or other problematic conditions noted while running a API.

---

[API](https://skmtc.net/cpanel/apis/cpanel-uapi.md) · [All operations](https://skmtc.net/cpanel/apis/cpanel-uapi/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/cpanel/cpanel-uapi/revisions/632e2f8e6d04/schema)