How to connect Microsoft Outlook to Codex

1. 1. Enable Microsoft Outlook in Metorial

   In your Metorial portal, enable the Microsoft Outlook MCP server and sign in with the account that owns the data. Access stays governed by your team policies.

2. 2. Add the server and sign in

   The Codex CLI, IDE extension and ChatGPT desktop app share this config.

   Copy

   codex mcp add metorial --url <your-magic-mcp-url>
   codex mcp login metorial

3. 3. Check the connection

   Type /mcp in Codex to see Metorial and its Microsoft Outlook tools.

• Manage Email: Perform actions on an existing email message: reply, reply all, forward, move to a folder, update properties (read status, importance, categories, flag), or delete.
• Send Email: Send an email message from the authenticated user's mailbox.
• Create Contact: Create a new contact in the authenticated user's contact book.
• Create Draft: Create a draft email message in the Drafts folder.
• Manage Contact: Update or delete an existing contact.
• Get Calendar Event: Retrieve the full details of a specific calendar event by its ID, including the complete body, attendees with response status, recurrence pattern, and online meeting information.
• Get Contact: Retrieve the full details of a specific contact by ID, including all email addresses, phone numbers, addresses, company information, and personal notes.
• Create Calendar Event: Create a new calendar event or meeting.
• List Calendars: List all calendars available to the authenticated user, including the default calendar and any additional calendars for work, family, etc.
• List Calendar Events: List calendar events from the authenticated user's calendar.
• Create Task: Create a new task in a Microsoft To Do task list.
• Get Email: Retrieve the full details of a specific email message by its ID, including the complete body content, all recipients, and attachment metadata.
• List Tasks: List tasks from a specific Microsoft To Do task list.
• List Task Lists: List all Microsoft To Do task lists for the authenticated user.
• List Mail Folders: List mail folders in the authenticated user's mailbox.
• And 6 more on the Microsoft Outlook MCP server page.

• Limit which Microsoft Outlook tools Codex sees with enabled_tools and disabled_tools on the metorial server in config.toml.
• Set default_tools_approval_mode to auto, prompt, writes or approve. writes prompts only for tools that are not marked read-only.
• Type /mcp in the composer to see the connected servers.
• Override the approval behavior for a single Microsoft Outlook tool with tools.<tool>.approval_mode.

Metorial is listed but tools are missing

Codex can connect without credentials and then see nothing. Run codex mcp login metorial to complete the OAuth sign-in.

Metorial times out at startup

Codex waits 10 seconds by default. Raise startup_timeout_sec under [mcp_servers.metorial] in ~/.codex/config.toml.

Long tool calls fail after a minute

The default tool timeout is 60 seconds. Raise tool_timeout_sec for the metorial server in config.toml.

Based on the Codex MCP documentation.