outlook-classic-windows-mcp

MVP MCP server for working with a locally configured classic Outlook for Windows desktop profile.

This does not use Microsoft Graph, Outlook on the web, new Outlook for Windows, or admin-enabled cloud APIs. It uses Windows COM automation against the classic Outlook desktop app/profile available on the machine running the MCP server. This is useful if you don't want to deal with your IT support or ask for your admin's blessing.

Note: this MCP is idiosyncratic to my own workflow and requirements. It is advised to fork and modify it—or ask your coding agent to do it for you—to mold the MCP to your own Outlook setup and use case.

Warning: Classic Outlook for Windows for Microsoft 365 users is supported until at least 2029. New Outlook gradually becomes the default or replacement. This MCP will only be viable in the near/medium term. In the long term, use a different MCP that uses admin-backed APIs! See https://learn.microsoft.com/en-us/answers/questions/5554339/when-will-classic-outlook-end

Requirements

• Windows
• Classic Microsoft Outlook desktop installed and configured
• uv

Install / run

cd C:\Users\muhammad.menjeni\git\outlook-classic-windows-mcp
uv sync
uv run outlook-local-mcp

The MCP server speaks stdio, so it is intended to be launched by an MCP client.

Pi MCP config example

Add a local server entry similar to this in your Pi MCP configuration, adjusting the path if needed:

{
  "mcpServers": {
    "outlook-local": {
      "command": "uv",
      "args": [
        "--directory",
        "C:\\Users\\muhammad.menjeni\\git\\outlook-classic-windows-mcp",
        "run",
        "outlook-local-mcp"
      ]
    }
  }
}

Tools

search_email

Searches Outlook mail by subject and/or body.

Arguments:

• query string: case-insensitive substring to find.
• folder string: folder to search. Default: Inbox. You can use paths like Inbox/Archive or Mailbox Name/Inbox.
• search_scope: all, subject, or body. Default: all.
• max_results: number of matches to return. Default: 10.
• max_items: newest items to inspect in the folder. Default: 500.
• include_body_preview: include a short body preview. Default: true.

list_mail_folders

Lists available Outlook folders to help choose a folder path.

create_leave_calendar_blocks

Creates two unsent Outlook calendar items for leave review:

1. A personal blocker marked Out of Office with no attendees.
2. A notification meeting marked Free with the supplied attendees.

Nothing is sent. By default both items are saved and opened in Outlook for manual review/sending.

Arguments:

• start_time string: start date/time, e.g. 2026-09-01 08:00.
• end_time string: end date/time. For all-day events this is interpreted as an exclusive end, e.g. one day from 2026-09-04 00:00 to 2026-09-05 00:00.
• required_attendees list/string: additional notification recipients. Configurable defaults can also be used.
• subject string: default comes from config, initially Amirul: On-Leave.
• body string: message body.
• optional_attendees list/string: optional notification recipients.
• location string.
• display boolean: open the saved items in Outlook. Default: true.
• confirmed boolean: must be true to actually create Outlook calendar items. Without confirmation, the tool only returns a proposal.

get_leave_defaults

Shows the current leave defaults and config path.

set_leave_defaults

Persists leave defaults such as subject and notification attendees. Requires confirmed=true before writing config.

infer_leave_recipients

Read-only scan of recent local Outlook email to infer candidate distribution lists for leave notifications. Returns candidates and evidence; it does not write config or create drafts.

resolve_recipients

Resolves names, emails, or distribution lists using Outlook recipient resolution/address book.

search_contacts

Searches local Outlook contact folders by name, email, company, department, or job title.

Notes / limitations

• First access may start Outlook if it is not already running.
• Your organization may show Outlook Object Model Guard prompts or block automation by policy.
• This MVP searches by scanning recent folder items, which is simple and reliable but not as fast as indexed Outlook search for very large folders.