The Fleece AI Brain Outlook connector syncs the messages in your connected Microsoft 365 mailbox — sender, subject and body — into a local-first knowledge base of plain Markdown and SQLite on your own machine. HTML mail is flattened to clean plain text and each message becomes a note titled by its subject. From there, any MCP-compatible AI app such as Claude Desktop or Cursor can answer from your real Outlook history, with the source one click away.
What syncs from Outlook
Every message arrives as a knowledge node — an ordinary file you can open, link and search, not a row locked inside Microsoft 365.
Mailbox messages
Each email in the connected mailbox is pulled in through the Microsoft Graph API, one message at a time.
Sender and subject
The From address and subject line come across, and the subject becomes the note title.
Clean plain text
HTML bodies are stripped to readable text; when a full body is missing, the message preview is kept instead.
Recent mail first
The first sync backfills the last 90 days; after that each run fetches only mail newer than the last one.
Immutable and deduplicated
A delivered email never changes, so each message is ingested once — a seen-ledger keeps a re-sync from creating duplicates.
Connect Outlook in four steps
No admin project, no mail rules to configure — one sign-in from the desktop app.
- 01
Install Fleece AI Brain
Download the desktop app for macOS, Windows or Linux and open your vault — a folder of plain Markdown files on your machine.
- 02
Open Connectors and pick Outlook
In the app, open the connectors panel, choose Outlook, and sign in with your Microsoft 365 account. OAuth is brokered securely; your mail content never passes through our servers.
- 03
Choose the mailbox
The connector reads the mailbox of the account you sign in with — nothing else. The first sync reaches back 90 days, then keeps up with new mail.
- 04
Let it sync — then ask
Sync runs in the background and stays up to date. Point Claude Desktop, Cursor or any MCP app at your Brain and ask what was agreed in a thread months ago.
The inbox runs the company. Your AI has never read a line of it.
In a Microsoft shop, the mailbox is the system of record. The budget approval, the sign-off on the contract, the one line where a customer said yes — they all landed in Outlook and stayed there. Search finds a subject if you remember the exact words; it does not tell your AI what was actually decided.
The Outlook connector ends that blind spot. Each message becomes a permanent note in one living knowledge graph, linked to the people, projects and tools it mentions — so the approval granted in March is still one question away in December, to you and to every AI you run.
Your mail lands on your machine, not in ours.
Sign-in is brokered through Pipedream Connect, but the Microsoft Graph API is then called directly from the desktop app whenever your account exposes a raw token; managed-OAuth accounts route through Pipedream's proxy instead. Either way, messages land straight in your vault as Markdown and SQLite and never transit Fleece's servers.
That is the whole trust model: we can't read your mailbox, period. The files are yours, they open in Obsidian or any editor, and if you ever leave, you take everything with you.
- +Microsoft Graph called from your device or a proxy — raw mail never transits our servers
- +Vault = plain .md files + SQLite, 100% Obsidian-compatible
- +Works offline once synced; cloud sync is optional and end-to-end encrypted
Give every AI app your Outlook memory.
One copy-paste connects the Brain to Claude Desktop, Cursor, Cline, Zed or agents you build. From then on, "what did we promise the client about the deadline?" is answered from the actual message — with the source note one click away.
Because every agent and tool reads the same graph, you stop forwarding threads and re-explaining context to each AI. On Teams, the organization map also shows which agents used that knowledge and what they cost.
Outlook connector — FAQ
Does my Outlook mail pass through Fleece's servers?+
No. Sign-in is brokered through Pipedream Connect, but the Microsoft Graph API is called directly from the desktop app (or through a proxy for managed-OAuth accounts). Your messages land straight in your local vault and never transit Fleece's servers; we never see or store your mail.
Which messages does the connector sync?+
The messages in the mailbox of the account you connect — nothing outside it. You scope it by choosing which account to sign in with, and the first sync only reaches back 90 days before keeping up with new mail.
Does it send or change anything in Outlook?+
No. The connector is read-only: it reads your messages into your knowledge base and never sends, replies, moves or deletes anything in your mailbox.
How often does it sync?+
Sync runs in the background from the desktop app and resumes incrementally from the newest message it has seen, so each run only fetches new mail. Because a delivered email never changes, each message is ingested once and re-syncs never create duplicates.
Which plan do I need to connect Outlook?+
The local brain is free, and connectors are the paid lever: Solo (€12/month) includes up to 3 connected tools, Pro (€24/month) makes them unlimited with auto-sync. Every plan starts with a 14-day trial, no card required.
How do I ask Claude or Cursor about my email?+
Connect the Brain to Claude Desktop, Cursor or any MCP-compatible app with a single copy-paste. Your AI then answers from the synced Outlook knowledge, citing the exact message it drew from.
Can I open the synced mail outside the app?+
Yes. Every message is an ordinary Markdown file in your vault, fully Obsidian-compatible — open, edit or grep it with any tool, and take it with you if you ever leave.
What happens if I disconnect Outlook?+
Sync stops, and everything already in your vault stays yours — the notes are local files, not a mirror that vanishes with the connection.
Make the inbox that runs your company readable.
Connect Outlook in one sign-in and give your whole AI stack a memory of the approvals and decisions already sitting in your mailbox.