How to install Gmail in Codex

To install Gmail in Codex, run "codex mcp add gmail --env GOOGLE_CLIENT_ID=123456789-abcdefghijk.apps.googleusercontent.com -- npx -y @mcp-z/mcp-gmail" in your terminal, then type /mcp in Codex to check it.

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Run the install command

In a terminal, run:

codex mcp add gmail --env GOOGLE_CLIENT_ID=123456789-abcdefghijk.apps.googleusercontent.com -- npx -y @mcp-z/mcp-gmail

2
Check it
Inside Codex, type /mcp to see the server and its tools.

MCP servers run with your permissions. If Gmail needs an API key, add it under env in the config. Check its README.

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Questions

Does Gmail work in Codex?

Yes. Codex supports mcp servers in the codex cli and ide extension, and Gmail installs with the steps above.

Gmail does not show up in Codex. What now?

Restart Codex fully, check the JSON is valid, and make sure Node.js (for npx) is installed. See common MCP errors and fixes.

Is Gmail safe?

It scores 51 of 100. Review the code before you install it, and only give it the access it needs. Grades and details.