Truly personal AI · early access

Personal AI that really knows you.

Imagine an assistant that completely understands you — because it has a complete index of your life. Every email. Every document. Your calendar, your notes, the threads and files that make up how you work and live.

We finally solved the Gmail search problem. You know the email is in there, and search still can’t find it. MCP has the same blind spot, leaving tools like Claude and ChatGPT with critical gaps. Braintunnel indexes your email and everything else in your life and finds it in milliseconds. That’s the difference between a chatbot that guesses and personal AI that knows you.

Diagram of Braintunnel’s life index: people, documents, and ideas linked in a graph, connected to apps like Google, GitHub, Notion, Asana, and Zoom. — Your second brain: a complete, interconnected index of your life.

Braintunnel is free during early access. We’re shipping fast with a small group of early users — if you like being on the frontier, jump in.

Sign in with Google and connect your sources. Braintunnel indexes your email, calendar, and documents to serve you — never to train generalized AI, never sold. You can disconnect or delete anytime. See our Privacy Policy and Security pages.

Try it free