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How to install Postmark MCP in Codex
To install Postmark MCP in Codex, run "codex mcp add postmark-mcp -- npx -y @activecampaign/postmark-mcp" in your terminal, then type /mcp in Codex to check it.
Built from the published package · server updated 8 days ago
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Run the install command
In a terminal, run:
codex mcp add postmark-mcp -- npx -y @activecampaign/postmark-mcp - 2
Check it
Inside Codex, type /mcp to see the server and its tools.
MCP servers run with your permissions. If Postmark MCP needs an API key, add it under env in the config. Check its README.
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Questions
Does Postmark MCP work in Codex?
Yes. Codex supports mcp servers in the codex cli and ide extension, and Postmark MCP installs with the steps above.
Postmark MCP 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 Postmark MCP safe?
It scores 81 of 100. Review the code before you install it, and only give it the access it needs. Grades and details.