What format is required for the instance host?

Provide the full hostname without the 'https://' prefix, for example: `box.yourdomain.com`.

Can I add multiple forwarding targets to an alias?

Yes, when using the `create_or_update_alias` tool, provide a comma-separated list of emails in the `forwards_to` field.

Does this work with 2FA enabled accounts?

The current API implementation uses Basic Auth. If 2FA is enabled on your admin account, you may need to use an API key or a dedicated admin user without 2FA for the integration.

Mail-in-a-Box MCP Server for VS Code Copilot 9 tools — connect in under 2 minutes

Name: Mail-in-a-Box
Availability: InStock
Author: Vinkius

code.visualstudio.com/docs/copilot/chat/mcp-servers

Built by Vinkius GDPR 9 Tools IDE

GitHub Copilot in VS Code is the most widely adopted AI coding assistant, embedded directly into the world's most popular code editor. With MCP support in Agent mode, Copilot can access external data and APIs to generate context-aware code grounded in real-time information.

Get MCP Server for AI Agents

ASK AI ABOUT THIS MCP SERVER

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Vinkius supports streamable HTTP and SSE.

RecommendedModern Approach — Zero Configuration

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The modern way to manage MCP Servers — no config files, no terminal commands. Install Mail-in-a-Box and 2,500+ MCP Servers from a single visual interface.

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Classic Setup·json

{
  "mcpServers": {
    "mail-in-a-box": {
      "url": "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
    }
  }
}

Fully ManagedVinkius Servers

60%Token savings

High SecurityEnterprise-grade

IAMAccess control

EU AI ActCompliant

DLPData protection

V8 IsolateSandboxed

Ed25519Audit chain

<40msKill switch

Stream every event to Splunk, Datadog, or your own webhook in real-time

* Every MCP server runs on Vinkius-managed infrastructure inside AWS - a purpose-built runtime with per-request V8 isolates, Ed25519 signed audit chains, and sub-40ms cold starts optimized for native MCP execution. See our infrastructure

About Mail-in-a-Box MCP Server

Connect your Mail-in-a-Box instance to any AI agent to automate your private email server management. This MCP server enables your agent to manage mailboxes, configure forwarding aliases, and monitor system health and diagnostics directly from natural language interfaces.

GitHub Copilot Agent mode brings Mail-in-a-Box data directly into your VS Code workflow. With a project-scoped config, the entire team shares access to 9 tools. Copilot queries live data, generates typed code, and writes tests from actual API responses, all without leaving the editor.

What you can do

User Administration — List all mail users, create new mailboxes, and update passwords programmatically
Alias Management — Create, update, and remove email forwarding addresses and group aliases
System Monitoring — Retrieve real-time health status, diagnostic checks, and configuration metadata for your server
Domain Oversight — List all hosted mail domains and subdomains configured on your instance
Access Control — Manage administrative privileges and account settings for your email users

The Mail-in-a-Box MCP Server exposes 9 tools through the Vinkius. Connect it to VS Code Copilot in under two minutes — no API keys to rotate, no infrastructure to provision, no vendor lock-in. Your configuration, your data, your control.

How to Connect Mail-in-a-Box to VS Code Copilot via MCP

Follow these steps to integrate the Mail-in-a-Box MCP Server with VS Code Copilot.

Create MCP config

Create a .vscode/mcp.json file in your project root

Add the server config

Paste the JSON configuration above

Enable Agent mode

Open GitHub Copilot Chat and switch to Agent mode using the dropdown

Start using Mail-in-a-Box

Ask Copilot: "Using Mail-in-a-Box, help me...". 9 tools available

Why Use VS Code Copilot with the Mail-in-a-Box MCP Server

GitHub Copilot for Visual Studio Code provides unique advantages when paired with Mail-in-a-Box through the Model Context Protocol.

VS Code is used by over 70% of developers. adding MCP tools to Copilot means your team can leverage external data without leaving their primary editor

Project-scoped MCP configs (`.vscode/mcp.json`) let you commit server configurations to your repository, ensuring the entire team shares the same tool access

Copilot's Agent mode integrates MCP tools seamlessly with file editing, terminal commands, and workspace search in a single agentic loop

GitHub's enterprise compliance and audit features extend to MCP tool usage, providing visibility into how AI interacts with external services

Mail-in-a-Box + VS Code Copilot Use Cases

Practical scenarios where VS Code Copilot combined with the Mail-in-a-Box MCP Server delivers measurable value.

Live API integration: Copilot can query an MCP server, inspect the response schema, and generate typed API client code in the same step

DevSecOps workflows: security teams can give developers access to domain intelligence tools directly in their editor for real-time vulnerability assessment during code review

Data pipeline development: Copilot fetches sample data via MCP and generates transformation scripts, validators, and test fixtures from actual API responses

Documentation generation: Copilot queries available tools and auto-generates README sections, API reference docs, and usage examples

Mail-in-a-Box MCP Tools for VS Code Copilot (9)

These 9 tools become available when you connect Mail-in-a-Box to VS Code Copilot via MCP:

create_mail_user

Requires a full email address and a password. Add a new mail user (mailbox)

create_or_update_alias

forwards_to should be a comma-separated list of emails. Add or update a mail alias

delete_mail_alias

Remove a mail alias

delete_mail_user

Remove a mail user

get_system_status

Check the status of the Mail-in-a-Box system

list_mail_aliases

List all mail aliases and forwarders

list_mail_domains

List all mail domains hosted on the server

list_mail_users

List all mail users on the server

update_user_password

Change the password for a mail user

Example Prompts for Mail-in-a-Box in VS Code Copilot

Ready-to-use prompts you can give your VS Code Copilot agent to start working with Mail-in-a-Box immediately.

"List all mail users on my server."

"Create a new mail user 'support@example.com' with password 'MySecret123!'."

"How is the health status of my Mail-in-a-Box server?"

Troubleshooting Mail-in-a-Box MCP Server with VS Code Copilot

Common issues when connecting Mail-in-a-Box to VS Code Copilot through the Vinkius, and how to resolve them.

MCP tools not available

Ensure you are in Agent mode in Copilot Chat. MCP tools only appear in Agent mode.

Mail-in-a-Box + VS Code Copilot FAQ

Common questions about integrating Mail-in-a-Box MCP Server with VS Code Copilot.

Which VS Code version supports MCP?

MCP support requires VS Code 1.99 or later with the GitHub Copilot extension. Ensure both are updated to the latest version. Older versions of Copilot may not expose the Agent mode toggle.

How do I switch to Agent mode?

Open the Copilot Chat panel and look for two mode options: "Ask" and "Agent". Click "Agent" to enable autonomous tool calling. In Ask mode, Copilot provides conversational answers but cannot invoke MCP tools.

Can I restrict which MCP tools Copilot can access?

Yes. VS Code shows a tool consent dialog before any MCP tool is invoked for the first time. You can also configure tool access policies at the organization level through GitHub Copilot settings.

Does MCP work in VS Code Remote or Codespaces?

Yes. MCP servers configured via .vscode/mcp.json work in Remote SSH, WSL, and GitHub Codespaces environments. The MCP connection is established from the remote host, so ensure the server URL is accessible from that environment.