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Connect Microsoft Outlook to Claude Code

Give Claude Code governed access to Microsoft Outlook’s 37 tools through Runlayer, with identity, policy, scanning, and audit on every call.

Book a demo Claude Code setup guide

Set up

Add Microsoft Outlook to Claude Code in four steps

Admins approve the server once. Everyone in Claude Code then gets it through the same governed connection.

  1. 1

    Approve Microsoft Outlook in Runlayer

    Add Microsoft Outlook from the catalog and choose who can use it and which of its tools are allowed.

  2. 2

    Connect Claude Code to Runlayer

    Runlayer’s CLI installs the Runlayer Plugin natively in Claude Code, and an Anthropic org install also reaches Claude Code. With direct tool listing turned on for your deployment, Microsoft Outlook’s 37 tools show up in Claude Code’s own tool list (supported Claude Code versions).

    Claude Code setup guide
  3. 3

    Sign in to Microsoft Outlook

    Sign in the way Microsoft Outlook requires. Runlayer holds the credentials so they stay out of the client’s configuration.

  4. 4

    Use Microsoft Outlook from Claude Code

    Microsoft Outlook’s approved tools appear in Claude Code. Every call is checked against policy and recorded.

Tools

37 Microsoft Outlook tools in Claude Code

Runlayer policy decides which of these Claude Code users can call. 6 read data only and 2 can change or delete data.

  • Create draft

    Create a new Outlook draft message in the Drafts folder without sending it.

  • Create reply draft

    Create an editable Reply or Reply-All draft attached to an existing Outlook thread.

  • Delete attachment

    Delete an attachment from an Outlook message or draft.

  • Delete message

    Delete a message from an Outlook mailbox.

  • Download attachment

    Download the content of a specific attachment from an Outlook message.

  • Forward message

    Forward an existing Outlook message to one or more recipients.

  • Get attachments

    List all attachments on an Outlook message, returning metadata but not file content.

  • Get message

    Fetch the full content of a single Outlook message by id, headers and body included.

See all 37 Microsoft Outlook tools

Control

What Runlayer can see and stop in Claude Code

Some controls apply to every client at the gateway. Others depend on what Claude Code exposes to Runlayer.

  • Gateway policy (available)

    Every Microsoft Outlook call from Claude Code passes through Runlayer, where your policies can allow, alert, mask, or block it.

  • Audit trail (available)

    Each call is recorded with the user, Claude Code as the client, the tool, and the policy and scanner decisions.

  • Client hooks (available)

    Capture supported prompts, reasoning, local and MCP tool calls, responses, and scanner decisions in real time.

  • Anthropic inference hooks (available)

    With Claude Enterprise, Anthropic sends each governed Claude Code prompt to Runlayer before inference, with nothing installed on devices (Anthropic beta).

  • OTLP telemetry (available)

    Claude Code can export OpenTelemetry logs to Runlayer for observe-only session reconstruction.

  • Stop a call before it runs (available)

    Runlayer can deny a tool call before Claude Code runs it.

  • Block output after it runs (available)

    Runlayer can block a tool’s output before Claude Code’s model sees it.

  • Redact output in place (available)

    Runlayer can mask sensitive parts of a tool’s output in Claude Code and pass the rest through.

In Claude Code

  • When a tool fails, Runlayer records the error but cannot hide it.

Frequently asked questions

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