Outlook (Microsoft 365)

What Claude can do

• Read messages and folders
• List attachments
• Prepare a draft, a reply or a forward

No sending: you review and send from Outlook.

Everything the service returns is coded before it reaches Claude.

Before you start

• A Microsoft account (personal or work).

Set up

1. Hidden Tokens dashboard → Connectors.
2. On the Outlook (Microsoft 365) row, click Enable.
3. Click Sign in: the screen shows a code and an Open the page button.
4. On the Microsoft page, enter the code, choose your account and accept. Microsoft only asks for this connector’s permissions.
5. Click Test. The status turns to “Ready”.

Each Microsoft connector (Outlook, OneDrive, SharePoint, Teams) has its own sign-in: enabling a second one asks you to sign in again, and removing one leaves the others untouched.

Try it in Claude

Read my last five messages and draft a reply to the most urgent one.

Claude should use a outlook__… tool and answer with codes. To get the real values back in a text, ask Hidden Tokens to decode it: they come back on your computer, not in the chat.

Switch off the original connector

In Claude, Settings → Connectors and Extensions: switch off Microsoft 365 / Outlook. Otherwise the AI can go through it, in clear.

Limits

• No sending: you review and send from Outlook.
• Images and binary attachments are not passed to Claude: a pixel cannot be coded.
• Not yet tried with a real account, nor on Windows (9 November 2026).

A problem? See Troubleshooting.