How to connect Microsoft Outlook to Claude Code

1. 1. Enable Microsoft Outlook in Metorial

   In your Metorial portal, enable the Microsoft Outlook MCP server and sign in with the account that owns the data. Access stays governed by your team policies.

2. 2. Add the server over HTTP

   Add --scope user to use it in every project.

   Copy

   claude mcp add --transport http metorial <your-magic-mcp-url>

3. 3. Sign in

   Run /mcp, select Metorial and sign in to load Microsoft Outlook tools.

• Manage Email: Perform actions on an existing email message: reply, reply all, forward, move to a folder, update properties (read status, importance, categories, flag), or delete.
• Send Email: Send an email message from the authenticated user's mailbox.
• Create Contact: Create a new contact in the authenticated user's contact book.
• Create Draft: Create a draft email message in the Drafts folder.
• Manage Contact: Update or delete an existing contact.
• Get Calendar Event: Retrieve the full details of a specific calendar event by its ID, including the complete body, attendees with response status, recurrence pattern, and online meeting information.
• Get Contact: Retrieve the full details of a specific contact by ID, including all email addresses, phone numbers, addresses, company information, and personal notes.
• Create Calendar Event: Create a new calendar event or meeting.
• List Calendars: List all calendars available to the authenticated user, including the default calendar and any additional calendars for work, family, etc.
• List Calendar Events: List calendar events from the authenticated user's calendar.
• Create Task: Create a new task in a Microsoft To Do task list.
• Get Email: Retrieve the full details of a specific email message by its ID, including the complete body content, all recipients, and attachment metadata.
• List Tasks: List tasks from a specific Microsoft To Do task list.
• List Task Lists: List all Microsoft To Do task lists for the authenticated user.
• List Mail Folders: List mail folders in the authenticated user's mailbox.
• And 6 more on the Microsoft Outlook MCP server page.

• Microsoft Outlook tools appear as mcp__metorial__<tool>. Use that name in permission rules to allow or deny a tool.
• Run /mcp to see whether Metorial is connected and to sign in again.
• Claude Code warns when a tool result passes 10,000 tokens and caps it at 25,000 by default. Raise the cap with MAX_MCP_OUTPUT_TOKENS.
• Pre-approve trusted Microsoft Outlook tools with allow rules in your settings so Claude Code stops asking each time.

claude mcp list shows "Needs authentication"

Run /mcp, select Metorial, and sign in. If sign-in keeps failing, choose Clear authentication in the same menu and sign in again.

A teammate sees "Pending approval"

Servers shared through a project .mcp.json need approval. Run claude in the project and approve Metorial when asked.

Large tool results are cut off

Claude Code limits MCP tool output to 25,000 tokens by default. Raise it with the MAX_MCP_OUTPUT_TOKENS environment variable.

Based on the Claude Code MCP documentation.