OutlookMCPServer

OutlookMCPServer is an MCP (Model Context Protocol) server that bridges Claude Desktop and the Microsoft 365 ecosystem through the Microsoft Graph API. By exposing a set of well‑defined resources and tools, it lets an AI assistant read, compose, and manage email, calendar events, OneDrive files, and SharePoint content without leaving the chat interface. The server handles authentication with Azure AD using a device‑code flow, caching tokens locally so that subsequent interactions are seamless and secure.

The core value proposition is that developers can give Claude instant, granular access to a user’s corporate mailbox and file storage without building custom connectors. The server presents high‑level operations—such as “search inbox for invoices” or “schedule a meeting with the sales team”—as single MCP calls that translate into Graph API requests. This abstraction reduces boilerplate, eliminates the need to write repetitive OAuth logic, and guarantees that all calls are performed with the least privilege required by the configured scopes.

Key capabilities include:

• Mail: Compose, reply, search, sort, filter, and analyze messages in the inbox or sent folder. The assistant can draft responses based on content analysis or retrieve message metadata for reporting.
• Calendar: Discover upcoming invites, list events, and create or update appointments. This is useful for scheduling assistants that need to negotiate time slots across multiple calendars.
• OneDrive: Search for documents, retrieve file metadata, and access content stored in the user’s personal drive. This enables document‑centric workflows such as “find the latest budget report”.
• SharePoint: Load site drives, search files across team sites, and pull metadata. This is critical for collaboration scenarios where data resides in shared libraries.

In practice, a developer can integrate OutlookMCPServer into an existing AI workflow by adding it to the section of Claude Desktop’s configuration. Once running, any MCP‑compatible agent can call the server’s endpoints to perform email or calendar tasks. For example, a conversational agent could ask “What are my meetings tomorrow?” and receive a list of events formatted for easy reading. Or it could prompt the assistant to “Send a follow‑up email to John about the Q3 report” and let Claude draft the message before sending.

What sets OutlookMCPServer apart is its tight coupling with Microsoft Graph and its use of the modern SDK, ensuring that all API calls are efficient and up‑to‑date with the latest Graph features. The server also leverages ’s , making the initial authentication user‑friendly while still enforcing admin‑consented scopes for security. This combination of ease of use, robust feature set, and secure authentication makes it a compelling choice for developers who need to embed Microsoft 365 capabilities into AI assistants without reinventing the wheel.