What's MCP?
An open protocol for AI to use real services.
Anthropic introduced the Model Context Protocol in late 2024. Every major AI runtime supports it now. inboxmcp speaks MCP. So whichever AI tool you prefer can use your mailbox the moment you connect it once.
- What it is
- A small open standard for AI assistants to call real services through a structured request, instead of asking you to copy-paste data into the chat.
- Where it runs
- In Claude, MCP servers show up as Connectors. In ChatGPT, as Apps (Apps SDK) or older Custom GPT Actions. Cursor, Windsurf, n8n and LibreChat all speak the same standard.
- How it works
- You ask the AI: “draft a reply to Markus.” Your AI sends a structured call to inboxmcp; inboxmcp performs it on your real mailbox over IMAP or Microsoft Graph; the result comes back. No copy-paste, no per-tool plugin, no lock-in.
Integrations
Works with the AI assistants you already use.
Set it up once on our side, then point any MCP-capable client at the same URL.
Claude
Anthropic
Available as a Custom Connector in Claude Web and Desktop. We're working on getting inboxmcp listed in the official Claude connector catalogue too.
ChatGPT
OpenAI
Available as a Custom MCP Connector for Plus, Pro, Business, Enterprise and Edu. Enable Developer Mode once to add it, then turn it back off. The connector stays. The listing in OpenAI's official app directory is still in review.
2026-05-26ChatGPT setup guide published. See the help center.
Gemini
We'll add Gemini as soon as Google supports the same connector format Claude and ChatGPT use.
Microsoft Copilot
Microsoft
We're following Microsoft's connector roadmap. Copilot will be added once it's ready on their side.
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