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Connect Claude to Microsoft 365

Claude reaches Microsoft 365 through one Flowplane address. You add Microsoft 365 once in Flowplane, add that address to Claude, and sign in. Read and answer Outlook mail, plan meetings, find OneDrive files and follow Teams chats. Sending and changes wait for your approval by default.

Connect Microsoft 365 →Set up your assistant
Tools
15 read · 15 change
Sign-in
Your own account
Approval, by default
Changes wait for you
MCP server
Flowplane’s tools
  1. 1

    Add Microsoft 365 in Flowplane

    In the Flowplane console, add Microsoft 365, tick Outlook, Calendar, OneDrive and Teams as you need them, and sign in with Microsoft.

    Each person signs in with their own Microsoft account, work or school, or a personal one such as outlook.com (Teams only works with work and school accounts). The assistant acts as that person and sees only their mail, calendar, files and chats. For a team mailbox or calendar you can connect one shared account instead, which everyone with access then uses. Flowplane keeps the login sealed; the assistant never sees it.

    Connect Microsoft 365 →

  2. 2

    Add Flowplane to Claude

    Your address is shown in the Flowplane console; it looks like

    https://mcp.flowplane.eu/<your-label>

    1. In Claude, open Customize › Connectors, choose + Add, then Add custom connector.
    2. Give it a name, paste your Flowplane address https://mcp.flowplane.eu/<your-label> and choose Continue.
    3. Keep sign-in on Sign in now, choose Add, then sign in to Flowplane in the window that opens and allow Claude.
    4. In a chat, open + › Connectors and turn Flowplane on.

    Steps checked against the vendor’s documentation (Anthropic)

  3. 3

    Ask Claude

    • “Which unread mails did I get from our accountant this week?”
    • “When are Sarah and Tom both free on Thursday afternoon? Book an hour then and invite them.”
    • “Find the quote for Janssens in my OneDrive and give me the link.”
    • “What did the project team say in our Teams chat today?”
    • “Reply to Marc’s last mail that Friday at 10 works for us.”
What it can do

What Claude can do in Microsoft 365

One Microsoft sign-in covers Outlook mail, the calendar, OneDrive and Teams, and you tick which of them the assistant may reach. It can search and read mail and attachments, look up events and when people are free, find files, and read your Teams chats. Sending, replying, booking a meeting, adding a file or posting in Teams waits for your approval by default.

Reads15

  • List foldersInbox, sent and your own folderslist_folders
  • Search messagesFind mail by sender, subject, date or unreadsearch_messages
  • Read messagesWho sent them, when, and what they sayread_messages
  • Download an attachmentOne attachment, up to 2 MiBdownload_attachment
  • List calendarsYour calendars and shared oneslist_calendars
  • List eventsEvents between two timeslist_events
  • Read an eventOne event, with its textget_event
  • Find free busyWhen people are freefind_free_busy
  • Search filesFind files and folders by name or contentsearch_files
  • List a folderWhat is in a folderlist_folder
  • Describe a fileName, size, type and linkget_file
  • List teamsYour teamslist_teams
  • List channelsA team's channelslist_channels
  • List chatsYour latest chatslist_chats
  • Read a chatThe latest messages in a chatread_chat

Changesasks first15

  • Send a messageSends right away, as yousend_message
  • Reply to a messageAnswers in the conversation, as youreply_message
  • Forward messagesAttached as they are, or inline, as youforward_message
  • Update messagesMark read or unread, flag, or moveupdate_messages
  • Delete messagesTo Deleted Items, from where you can restore themdelete_messages
  • Create a draftKept in Drafts, never sentcreate_draft
  • Create a mail folderA new folder for mailcreate_mail_folder
  • Create eventAdd an event, and invite peoplecreate_event
  • Update eventChange an eventupdate_event
  • Answer an invitationAccept, maybe or decline, as yourespond_to_event
  • Delete eventDelete an eventdelete_event
  • Create a folderA new folder, never over an existing onecreate_folder
  • Add a text fileA new text file, never over an existing oneupload_text_file
  • Send a chat messageSends right away, as yousend_chat_message
  • Post in a channelPosts right away, as yousend_channel_message
FAQ

Questions

What can the assistant change in Microsoft 365?
It can send, reply and forward mail, move, mark and delete messages, make drafts and mail folders, add, change, answer and delete calendar events, add folders and text files to OneDrive, and post in Teams chats and channels. Each of those waits for your approval by default. Deleted mail goes to Deleted Items, where you can restore it.
What is left out on purpose?
It does not read the contents of OneDrive files: it finds them and gives their name, size, type and a link to open them. It never overwrites, shares or deletes files. It does not read what others post in Teams channels, because that needs a tenant administrator’s consent; it can post in them. Attachments over 2 MiB are not fetched.
Is there a limit on how much mail it sends?
Yes. Sending, replying and forwarding share one limit of 30 messages an hour per person.
Does Claude see the password or key for Microsoft 365?
No. You sign in to Microsoft 365 through Flowplane, which keeps that sign-in sealed. Claude only gets a Flowplane sign-in for you, which you can revoke in the console.
Can Claude change things in Microsoft 365 without asking?
Not by default: every change in Microsoft 365 waits for your approval in the browser. Your workspace’s rules decide, per tool.
Your assistant

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Everything about Microsoft 365 and Flowplane →

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