MCP Outlook Tools

A Model Context Protocol (MCP) server implementation that enables AI assistants to interact with Microsoft Outlook for calendar management, email operations, and search functionality.

Features

• 📅 Calendar Management

  • Get calendar items within a date range

  • Add new appointments with full details

  • Support for categories and busy status

• 📧 Email Operations

  • Send emails with To/CC recipients

  • Display confirmation before sending

  • Full body formatting support

• 🔍 Email Search

  • Search emails by date and keyword

  • Extract user information from addresses

  • Japanese text encoding support

Related MCP server: Microsoft 365 MCP Server

Requirements

• Windows OS (required for pywin32)

• Microsoft Outlook installed and configured

• Python 3.10 or higher

• MCP-compatible AI assistant (e.g., Claude Desktop)

Installation

1. Clone the repository:

git clone https://github.com/wmoto-ai/mcp-outlook-tools.git
cd mcp-outlook-tools

2. Install dependencies using uv:

uv pip install -e .

Or using pip:

pip install -e .

Configuration

For Claude Desktop

Add the following to your Claude Desktop configuration file:

Windows: %APPDATA%\Claude\claude_desktop_config.json macOS: ~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "outlook-tools": {
      "command": "uv",
      "args": [
        "--directory",
        "C:/path/to/mcp-outlook-tools",
        "run",
        "--with-editable",
        ".",
        "-m",
        "outlook_tools.server"
      ],
      "cwd": "C:/path/to/mcp-outlook-tools",
      "env": {
        "PYTHONIOENCODING": "utf-8"
      }
    }
  }
}

Usage

Once configured, the following tools are available in your AI assistant:

add_appointment

Add a new appointment to Outlook calendar
Parameters:
- subject: Appointment title
- start_time: Start datetime (YYYY-MM-DD HH:MM)
- end_time: End datetime (YYYY-MM-DD HH:MM)
- location: Meeting location (optional)
- description: Detailed description (optional)
- categories: Comma-separated categories (optional)
- busy_status: 0=Free, 1=Tentative, 2=Busy, 3=Out of Office (default: 1)

get_calendar

Get calendar items for a date range
Parameters:
- start_date: Start date (YYYY-MM-DD)
- end_date: End date (YYYY-MM-DD)

send_email

Send an email via Outlook
Parameters:
- to: Recipient email addresses (semicolon-separated)
- cc: CC recipients (semicolon-separated)
- subject: Email subject
- body: Email body text

Project Structure

mcp-outlook-tools/
├── src/
│   └── outlook_tools/
│       ├── __init__.py
│       ├── server.py           # MCP server implementation
│       ├── calendar_service.py # Calendar operations
│       └── search_service.py   # Email search operations
├── test/                       # Test files
├── pyproject.toml             # Project configuration
└── README.md                  # This file

Development

Running Tests

pytest test/

Type Checking

pyright src/

Linting

ruff check src/

Security Notes

• This tool requires access to your local Outlook installation

• Emails are displayed before sending for user confirmation

• No credentials are stored in the code

• All operations use Windows COM interface with existing Outlook authentication

Limitations

• Windows only (due to pywin32 dependency)

• Requires Outlook to be installed and configured

• Time zone handling assumes JST (+9 hours)

Contributing

Contributions are welcome! Please feel free to submit a Pull Request.

License

This project is licensed under the MIT License - see the LICENSE file for details.

Acknowledgments

• Built with FastMCP framework

• Uses pywin32 for Outlook COM interface