OWA Exchange MCP Server

by nhype·io.github.nhype/owa-exchange-mcp·v1.0.1·8 stars

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MCP server for Microsoft Exchange / OWA — email, calendar, directory, availability

B75/100grade B

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Safety scan

B75/100

full report

Adoption

New

8 stars26 downloads/wk

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OWA Exchange MCP Server tools (31, 13 write)

write = sends, deletes, buys or posts

Read from the package source without running it. The installed server may list more.

cancel_meetingwrite action
Cancel (delete) a calendar meeting and notify attendees.
check_session
Check whether the current OWA session is authenticated.
create_folderwrite action
Create a new mail folder.
create_meetingwrite action
Create a new calendar meeting.
delete_emailwrite action
Delete one or more emails.
delete_folderwrite action
Delete a mail folder.
download_attachments
Download all file attachments from an email to disk.
download_event_attachments
Download all file attachments from a calendar event to disk.
empty_folder
Empty all items from a mail folder.
find_free_time
Find free time slots in your own calendar.
find_meeting_time
Find meeting times that work for multiple people.
find_person
Search for people in the corporate directory.
forward_emailwrite action
Forward an email to other recipients.
get_calendar_events
Get calendar events within a date range.
get_emailwrite action
Get a single email with full body and details.
get_email_linkswrite action
Extract all hyperlinks from an email's HTML body.
get_emails
Get emails from a mailbox folder.
get_event_links
Extract all hyperlinks from a calendar event's HTML description.
get_folders
List mail folders from the Exchange mailbox.
get_meeting_contacts
Build a connection matrix: who you meet with most often.
get_meeting_stats
Get meeting count statistics for one or more people over a date range.
login
Authenticate to Exchange OWA (handles credential setup and 2FA login).
main
Entry point: run the MCP server over stdio.
mark_email_readwrite action
Mark one or more emails as read or unread.
move_emailwrite action
Move one or more emails to a different folder.
move_folder
Move a mail folder to a different parent folder.
rename_folder
Rename an existing mail folder.
reply_emailwrite action
Reply to an email.
respond_to_meeting
Respond to a meeting invitation (accept, decline, or tentative).
send_emailwrite action
Send a new email.
update_meetingwrite action
Update an existing calendar meeting.

Public scan report

scanner v0.1.10 · 2026-09-28 · same rubric, same numbers if you re-run it

no findings

Code scan15 source files scanned25/25
–Live reliabilityno gateway calls yet and no remote to proben/a
–Tool poisoningtools not inspected (local package is not executed); not countedn/a
Auth qualitylocal package, no credentials required12/15
Maintenancelast push 224 days ago4/15
Maintainer identityregistry namespace matches repository owner; GitHub account older than a year8/10

Overall 75/100. Components that don't apply are left out of the denominator. Any critical finding is an F.Rubric Appeal a finding JSON

How OWA Exchange MCP Server compares

Against every graded Email MCP server, from our own scans and uptime checks. Updated after each scan run.

Safety score: 75/100; higher than 45% of 916 Email servers
Tools: 31; the typical Email server has 7
Tools that change things: 42%; typical: 25%. Fewer write tools means less an agent can break
GitHub stars: 8; more than 86% of 493 Email servers
Downloads a week: 26; more than 9% of 235 Email servers with a package

What its tools let an agent do: 16 read · 2 create · 8 change · 3 delete · 2 send or post

Install OWA Exchange MCP Server in Claude Code, Cursor or VS Code

claude mcp add owa-exchange-mcp -- uvx exchange-mcp-server

Add to Cursor

What the publisher says

From the OWA Exchange MCP Server repository's README, as published. We do not edit it. Read it on GitHub

OWA Exchange MCP Server

MCP (Model Context Protocol) server for any Microsoft Exchange / OWA (Outlook Web Access) deployment. Gives LLM agents access to email, calendar, directory search, folders, availability, and meeting analytics via 30 tools.

Works with any on-premise or hosted Exchange server that exposes OWA.

Quick Start

# Copy and edit the MCP config with your OWA URL
cp .mcp.json.example .mcp.json

# One-time: set up encrypted credentials
python3 login.py --setup

# Login (opens headless browser, 2FA approval required)
python3 login.py

# Install the MCP server
pip install -e .

Install

Add to your MCP client config. Replace https://owa.example.com with your OWA URL.

Claude Desktop (~/Library/Application Support/Claude/claudedesktopconfig.json):

{
  "mcpServers": {
    "exchange": {
      "command": "uvx",
      "args": ["exchange-mcp-server"],
      "env": {
        "EXCHANGE_OWA_URL": "https://owa.example.com"
      }
    }
  }
}

Cursor (.cursor/mcp.json):

{
  "mcpServers": {
    "exchange": {
      "command": "uvx",
      "args": ["exchange-mcp-server"],
      "env": {
        "EXCHANGE_OWA_URL": "https://owa.example.com"
      }
    }
  }
}

Claude Code (.mcp.json):

{
  "mcpServers": {
    "exchange": {
      "command": "uvx",
      "args": ["exchange-mcp-server"],
      "env": {
        "EXCHANGE_OWA_URL": "https://owa.example.com"
      }
    }
  }
}

Configuration

Login

Option A: Via MCP tool (recommended)

The login tool handles credential setup and authentication within the MCP session — no separate terminal needed.

First time (setup + login):

login(master_password="...", username="user@example.com", password="...")

Subsequent logins (decrypts stored credentials):

login(master_password="...")

Option B: Via CLI

python3 login.py --setup   # First time: save encrypted credentials
python3 login.py            # Login with 2FA

Both methods:

Open a headless browser to your OWA URL
Submit credentials
Wait for 2FA approval (up to 90 seconds)
Save encrypted session cookies to session-cookies.txt

Credentials and session cookies are encrypted at rest with AES-256 (PBKDF2 key derivation, 480k iterations).

Tools (30)

Email (10)

Calendar (7)

Directory (1)

Shortened. The full README is on GitHub.

Nothing above is checked by us. What we check is on the safety report.

OWA Exchange MCP Server: common questions

Is OWA Exchange MCP Server safe?: Mostly: it is graded B (75/100). Read the OWA Exchange MCP Server safety report
How do I install OWA Exchange MCP Server?: It runs on your machine. Copy the Claude Code, Cursor, VS Code or Claude Desktop config from the install section.
Does OWA Exchange MCP Server need an API key?: No secret keys are declared. It reads 2 settings from the environment.
Is OWA Exchange MCP Server maintained?: The last commit was 261 days ago (2026-02-16). The latest release is v1.0.1.
What can I use instead of OWA Exchange MCP Server?: Servers from other publishers that do the same job: Outlook Assistant MCP server, Mailoo - Email MCP Server and LMCP MCP server.
How does OWA Exchange MCP Server compare with other Email MCP servers?: safety score 75/100 (higher than 45% of 916 Email servers); tools 31 (the typical Email server has 7); tools that change things 42% (typical: 25%. Fewer write tools means less an agent can break). Full comparison.

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Run it through the gateway

Local package. It runs on your machine, not through the gateway.

Rating: —
Safety grade: B · 75/100
Stars: 8
Downloads/wk: 26
Price: Free
Licence: MIT
Transport: Local · pypi
Version: 1.0.1
Category: Email
Last release: 2026-02-16

Credentials it needs

EXCHANGE_OWA_URLBase URL of your OWA instance (e.g. https://owa.example.com)
EXCHANGE_COOKIE_FILEPath to session cookies file (default: session-cookies.txt)

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