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Microsoft 365 MCP: five ways to connect Outlook, OneDrive and Teams

Claude's Microsoft 365 connector has 7 tools, and every one of them searches or reads. None sends an email or adds a meeting. Microsoft's own Work IQ MCP server can do both, and so can the community servers and a connection your company owns. On November 10, 2026, we counted 140 servers in the official MCP Registry that work with Microsoft 365. Below are the five ways to connect, what each one can do and what each one needs from you.

By Vadim DunaevskiyUpdated November 11, 2026Sources checked November 11, 20268 min read

Five ways at a glance

Way	Who makes it	Can it send email?	What you set up
The Microsoft 365 connector in Claude	Anthropic	No. Its 7 tools search and read¹	Add it from Claude's directory and sign in
Work IQ MCP	Microsoft	Yes, through its action tool²	Sign in with Microsoft Entra ID, within your tenant's policy
Microsoft's workload servers	Microsoft	The registry lists none for mail⁴	Your admin makes them available in the Microsoft 365 admin center³
A community server	A developer on GitHub	Depends on the project	Run it yourself, often with your own app registration⁵
Conecto (ours)	Conecto	Yes⁹	An app your company registers and your admin consents to¹⁰

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Claude for small business: what it does and costs

Claude's Microsoft 365 connector only reads

The connector is made by Anthropic, not by Microsoft, and has been in Claude's directory since November 2025. Its page lists seven tools:

sharepoint_search
sharepoint_folder_search
outlook_email_search
outlook_calendar_search
find_meeting_availability
chat_message_search
read_resource¹

Every one of them finds or reads something. With it, Claude can search documents across SharePoint and OneDrive, review email threads, read your calendar and Teams chats, and find a time when people are free. The page lists no tool that sends an email, replies to one, or puts a meeting on a calendar.¹

That is a real difference from Google's side. Claude's Gmail connector, which Google makes, lists 29 tools, and send_message, reply and forward are among them.¹¹ Google Workspace MCP goes through those.

Which accounts work depends on your Claude plan. On Free, Pro, Max and Ultra you can connect a work or school account, or a personal one at outlook.com, hotmail.com or live.com. Team and Enterprise plans take work or school accounts only.¹

What Microsoft itself ships

Microsoft has two kinds of MCP server for Microsoft 365, and it tells you to use only one of them for new work.

Work IQ MCP

Work IQ MCP is one endpoint for all of Microsoft 365. Its tools let an agent "read, create, update, and delete Microsoft 365 entities," ask Microsoft 365 Copilot a question, and look up what paths exist. Microsoft says Work IQ MCP is generally available as part of the Work IQ API.^2,3

It works differently from most servers. There is no tool called "send email." There are a few general tools, and the path you give one says what it acts on. Microsoft's own examples:

What the agent calls	What it does
fetch /me/messages	Reads my emails
do_action /me/sendMail	Sends an email
create_entity /me/events	Creates a calendar event
fetch /me/chats/{id}/messages	Reads Teams chat messages²

Microsoft's two pages don't agree on how many tools there are. The overview names 12: fetch, fetch_blob, create_entity, update_entity, delete_entity, do_action, call_function, ask, retrieve, list_agents, get_schema and search_paths, with retrieve in public preview.² The Agent 365 page says the endpoint has 10 general tools.³ We read both on November 11, 2026.

It signs in with Microsoft Entra ID, and what an agent may reach is set by four broad permissions plus your tenant's policy for each path.²

The workload servers

Microsoft also hosts servers for single workloads. Its Agent 365 page says some of them, for Copilot, Calendar, Mail, SharePoint, OneDrive, Teams, User and Word, "are part of a legacy experience retained for testing and backward compatibility," and that you shouldn't pick them in place of Work IQ.³

They are still in the official MCP Registry. On November 10, 2026, Microsoft listed 21 servers there, and 8 of them are these Microsoft 365 workload servers: admin tools, calendar, Microsoft 365 Copilot search, user details, OneDrive and SharePoint, SharePoint lists, Teams and Word. Each address carries your tenant's ID. None of the eight is a mail server.⁴

What your own organization can use is a separate question. Microsoft says the Tools registry in the Microsoft 365 admin center is the source of truth, and that it varies by tenant, region, rollout status, licensing and administrator approval.³

How many Microsoft 365 MCP servers there are

We went through every server in the official MCP Registry on November 10, 2026. Of its 60,115 active servers, 140 name Outlook, Microsoft 365, Office 365, OneDrive, SharePoint, Microsoft Graph or Microsoft Teams in their name, title or description.⁴

Servers that name	Count
Outlook	70
Microsoft 365 or Office 365	53
Microsoft Graph	23
OneDrive or SharePoint	17
Microsoft Teams	10

A server that names two products counts in both rows. Of the 140, 60 are remote servers at a web address and 88 are packages you install and run. Nine are both.

Google Workspace has more: 214 servers by the same count. The full count of the registry is on our statistics page.

The community servers people use most

These are the four most starred projects we found on GitHub for Microsoft 365 and Outlook, read on November 11, 2026.

Project	Stars	License	Last change	Covers
ms-365-mcp-server, by Softeria	1,129	MIT	November 11, 2026	Microsoft 365, with personal account tools by default and an organization mode for Teams and SharePoint⁵
outlook-mcp, by ryaker	455	None listed	March 30, 2026	Outlook, through the Microsoft Graph API⁶
lokka, by merill	310	MIT	September 25, 2026	Microsoft 365⁷
cli-microsoft365-mcp-server, by pnp	135	MIT	November 7, 2026	Managing Microsoft 365⁸

The largest one works with a personal account out of the box and asks for a flag to reach work or school features. It also supports your own Azure app registration when you need permissions its default app doesn't declare.⁵

Stars show interest. They are not a review of the code, and one of the four lists no license.⁶ What to check before you connect a server applies to all of them.

Where Conecto fits

Conecto is our product. Its connection belongs to the company, not to one person. Your business registers an app in Microsoft Entra ID with four application permissions, for reading and sending mail, calendars and files, and your admin consents. You then name the mailboxes your agent may act as, from 1 to 20, and it never acts as anyone else.¹⁰

It has 11 tools: search, read and send Outlook mail, read, add and cancel calendar events with a Teams link if you ask for one, search and read OneDrive files, and write a text file to OneDrive. Reading and searching are free. Each email sent, event added or cancelled, or file written costs $0.001.⁹

Three limits to know:

It needs an admin's consent, so it is for a business tenant, not a personal outlook.com account.¹⁰
It reads OneDrive files up to 5 MB and writes text files only. It has no SharePoint or Teams chat tools.⁹
Cancelling an event and replacing a file wait for the owner's approval by default.¹⁰

The same connection gives your agent Conecto's other tools, such as a CRM and invoices, next to your Outlook mail. If you only want Claude to find things in your own mailbox, the connector in Claude's directory is the shorter way.

Which one fits

You want Claude to search your mail, files and Teams chats: the Microsoft 365 connector in Claude. Claude connectors has the steps.¹
You need the agent to send mail or book meetings, and your tenant has Work IQ: Work IQ MCP, Microsoft's own route.²
You are a developer, or you want a personal account: a community server, checked first.⁵
Your agent should work as support@ or sales@ for the whole company: a connection the company owns, such as Conecto's.¹⁰

How we counted

For the registry count, we read every entry of the official MCP Registry through its public API on November 10, 2026, counted each server name once at its latest active version, and searched each name, title and description for the product names above.⁴ A server that mentions Outlook only in passing still counts, so 140 is the widest fair number. The narrow one is 38: the servers that carry a Microsoft 365 product in their name.

For the tool lists, we read Claude's directory page and Microsoft's two pages on November 11, 2026, and copied the tool names as printed. For the community table, we took stars, licenses and the date of the last change from GitHub on the same day.

We did not connect any of these to a real mailbox or tenant, and we did not test what each tool does. This guide compares what each maker publishes.

Questions

Does Microsoft have an official MCP server for Microsoft 365?

Yes. Work IQ MCP is Microsoft's server for Microsoft 365, one endpoint that reads, creates, updates and deletes items, and Microsoft says it is generally available as part of the Work IQ API.^2,3

Can Claude send email from Outlook?

Not with the Microsoft 365 connector in Claude's directory. Its seven tools search and read.¹ Sending needs another route: Work IQ MCP, a community server, or a connection such as Conecto's.^2,9 Can ChatGPT and Claude send emails covers them.

Who makes Claude's Microsoft 365 connector?

Anthropic. It has been in Claude's directory since November 2025, and Anthropic verified it.¹

Does the Microsoft 365 connector work with a personal Outlook account?

On Claude's Free, Pro, Max and Ultra plans, yes: outlook.com, hotmail.com and live.com accounts connect, as do work or school accounts. Team and Enterprise plans take work or school accounts only.¹

How many Microsoft 365 MCP servers are there?

We counted 140 in the official MCP Registry on November 10, 2026, out of 60,115 active servers. Outlook is named most often, by 70 of them.⁴

What is the difference between Work IQ MCP and Microsoft's Calendar or Teams servers?

Work IQ MCP is one endpoint with a few general tools that act on paths. The Calendar, Teams and similar servers each cover one workload, and Microsoft describes them as a legacy experience kept for testing and backward compatibility.³

Sources

We read these pages on November 11, 2026. Each number in the guide links to the page behind that sentence.

Conecto publishes this guide and sells business tools for AI agents. How we write our guides. To report a mistake, write to hello@conecto.chat.

Written by Vadim Dunaevskiy, Co-founder of Conecto. LinkedIn