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Connect ChatGPT

ChatGPT on the web. ChatGPT calls it a custom MCP server, and makes it a plugin.

This is the address to add. The app never sees your password: you sign in on PostPike's own page, and tick what it may do.

MCP server
https://admin.postpike.com/mcp
See or disconnect your agents

Add PostPike

  1. In ChatGPT on the web, go to Plugins (chatgpt.com/plugins).
  2. Select the plus button, then Add custom MCP server.
  3. Enter PostPike as the name. Under Connection, enter https://admin.postpike.com/mcp as the Server URL.
  4. For authentication, choose OAuth. PostPike registers ChatGPT by itself, so leave any client ID and secret empty.
  5. Review the warning, select I understand and want to continue, and then Create as a plugin.
  6. Install the plugin. Sign in as your mailbox on the PostPike page that opens, tick what ChatGPT may do, and select Allow.
On Pro, ChatGPT can only search and read mail through a custom MCP server. Sending, replying and organising need a Business, Enterprise or Edu workspace, where an admin or owner adds the plugin and everyone signs in as their own mailbox. If you don't see Add custom MCP server, your plan doesn't offer it.

Use it in a chat

  1. Start a new chat, type @ and select PostPike.
  2. Ask, for example: "Find the invoice Acme sent last week." ChatGPT asks you to confirm anything that changes your mail, such as sending.

From OpenAI: Connecting custom MCP servers in ChatGPT, OpenAI: Add custom MCP server. Menus change: if something here doesn't match what you see, tell us.