Outlook MCP Server

olk is a scriptable CLI and MCP server for Outlook mail, calendars, contacts, tasks, and OneDrive through Microsoft Graph. It works with personal Outlook.com accounts and enterprise Microsoft 365 accounts. It runs locally over stdio via the published package.

People who work with microsoft, openclaw and outlook and want it reachable from Claude, Cursor, VS Code, or another MCP client. The project is written in Go.

VERIFIED ACTIVE

LAST COMMIT 2026-09-17 · ★ 19 · VERIFIED 2026-09-18

MIT · Go servers · how we verify → /methodology

01 · Install Outlook

Claude Code

claude mcp add rlrghb-olkcli -- npx -y olkcli

Claude Desktop / Cursor / VS Code - add to config

{
  "mcpServers": {
    "rlrghb-olkcli": {
      "command": "npx",
      "args": [
        "-y",
        "olkcli"
      ]
    }
  }
}

Same JSON for Cursor. For VS Code, rename the top-level key from `mcpServers` to `servers`.

Using another client? Same JSON, different key

Claude Desktop · mcpServers

Cursor · mcpServers

VS Code · servers

Windsurf · mcpServers

Zed · context_servers

Cline · mcpServers

Roo Code · mcpServers

Continue · mcpServers

LibreChat · mcpServers

Gemini CLI · mcpServers

Codex CLI · mcp_servers

Full setup guides: every client.

02 · Evidence

Security posture

What to check before giving this server access to your agent - from the registry, GitHub, and our own probes. We don't score safety; we show what's verifiable.

runs as local process (stdio) - runs on your machine with your user's permissions

license MIT - declared in the repository

npm package olkcli - unscoped; check the name against the project README before installing

registry namespace io.github.rlrghb is GitHub-verified and matches the repo owner

03 · What Outlook can do

Prose above is summarized from the project's README and registry record - no invented capabilities.

Latest releases

v1.14.0 · 2026-09-15

document Inbox default (#114) · support event bodies and attachments · attach files and update recipients on existing drafts (#105) · expose inline attachment identity (#103) · honor delegated mailbox for deletes…

v1.13.1 · 2026-09-11

preserve page-size preference on continuation (#100) · honor immutable IDs in delta requests (#101)

v1.13.0 · 2026-08-29

delegated mailbox for reply/forward, and agent-scoped mailbox choice (#89) · add provider parity and calendar controls (#85) · improve delegated diagnostics and timeout guidance (#97) · show Cc and Bcc in send and…

04 · Who maintains Outlook

outlook is maintained by rlrghb. It's the only MCP server we track from this author; the repo dates to Apr 2026.

05 · Facts

repository: github.com/rlrghb/olkcli
category: email - actively maintained as of 2026-09-18.
release cadence: 6 releases in the last 90 days (latest 2026-09-15)
registry: io.github.rlrghb/outlook (active, first published 2026-06-09 · 9 versions)
packages: npm:olkcli

06 · Outlook FAQ

What is Outlook?

Is Outlook still maintained?

Yes - as of 2026-09-18, its last commit was 2026-09-17 and it shipped 6 releases in the last 90 days. We re-verify nightly.

How do I install Outlook?

Run `npx -y olkcli`. You can also paste the ready-made client config above.

Does Outlook run locally?

Yes - it's a stdio server: it runs on your machine (via npx) with your user's permissions. Your data stays local unless the server itself calls external APIs.

07 · Alternatives to Outlook

Alternatives to Outlook

Maintained email servers if Outlook isn't the fit.

More email MCP servers · Notifyd · IntoDNS.ai DNS & Email Security Scanner · Forge MCP · Samva MCP · Email Inbox API + Sending by Sendmux

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