Enhanced Outlook MCP Server

This is an enhanced, modular implementation of the Outlook MCP (Model Context Protocol) server that connects Claude with Microsoft Outlook through the Microsoft Graph API. This server provides a robust set of tools for email, calendar, folder management, and rule creation.

Features

Complete Authentication System: OAuth 2.0 authentication with Microsoft Graph API with token refresh and multiple user support
Email Management: List, search, read, send, and organize emails with attachment support
Calendar Integration: Create, modify, and manage calendar events with attendee tracking
Folder Organization: Create, manage, and navigate email folders
Rules Engine: Create and manage complex mail processing rules
Modular Architecture: Clean separation of concerns for better maintainability and extensibility
Enhanced Error Handling: Detailed error messages and logging
Test Mode: Simulated responses for testing without real API calls
Rate Limiting: Prevent API throttling with built-in rate limiting
Multi-environment Configuration: Support for development, testing, and production environments

Directory Structure

/enhanced-outlook-mcp/
├── index.js                     # Main entry point
├── config.js                    # Configuration settings
├── .env.example                 # Example environment variables
├── auth/                        # Authentication modules
│   ├── index.js                 # Authentication exports
│   ├── token-manager.js         # Token storage and refresh
│   ├── multi-user-support.js    # Multiple user support
│   └── tools.js                 # Auth-related tools
├── email/                       # Email functionality
│   ├── index.js                 # Email exports
│   ├── list.js                  # List emails
│   ├── search.js                # Search emails
│   ├── read.js                  # Read email
│   ├── send.js                  # Send email
│   └── attachments.js           # Handle email attachments
├── calendar/                    # Calendar functionality
│   ├── index.js                 # Calendar exports
│   ├── create-event.js          # Create calendar events
│   ├── list-events.js           # List calendar events
│   ├── update-event.js          # Update calendar events
│   └── delete-event.js          # Delete calendar events
├── folder/                      # Folder management
│   ├── index.js                 # Folder exports
│   ├── list.js                  # List folders
│   ├── create.js                # Create folders
│   └── move.js                  # Move items between folders
├── rules/                       # Mail rules functionality
│   ├── index.js                 # Rules exports
│   ├── create.js                # Create mail rules
│   ├── list.js                  # List mail rules
│   └── delete.js                # Delete mail rules
└── utils/                       # Utility functions
    ├── graph-api.js             # Microsoft Graph API helper
    ├── odata-helpers.js         # OData query building
    ├── logger.js                # Logging utility
    ├── rate-limiter.js          # API rate limiting
    └── mock-data/               # Test mode mock data
        ├── emails.js            # Mock email data
        ├── folders.js           # Mock folder data
        ├── calendar.js          # Mock calendar data
        └── rules.js             # Mock rules data

Installation

Clone the repository:

git clone https://github.com/your-username/enhanced-outlook-mcp.git
cd enhanced-outlook-mcp

Install dependencies:
```
npm install
```

Create a .env file based on .env.example with your Microsoft App Registration details:

MS_CLIENT_ID=your_client_id
MS_CLIENT_SECRET=your_client_secret
# Additional configuration options

Usage with Claude

Configure Claude to use the MCP server by adding the following to your Claude configuration:

{
  "tools": [
    {
      "name": "enhanced-outlook-mcp",
      "url": "http://localhost:3000",
      "auth": {
        "type": "none"
      }
    }
  ]
}

Start the MCP server:
```
npm start
```
In a separate terminal, start the authentication server:
```
npm run auth-server
```
Use the authenticate tool in Claude to initiate the authentication flow.

Authentication Flow

Start the authentication server on the configured port (default: 3333)
Use the authenticate tool to get an authentication URL
Complete the authentication in your browser
Tokens are securely stored in the configured location

Development

To run the server in development mode with auto-reload:

npm run dev

To run tests:

npm test

License

MIT License

Contributing

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