Knowles Mail Bridge

A private tool that lets its owner work with his own Gmail mailboxes from an AI assistant.

Knowles Mail Bridge is a personal, single-operator application. It is not a product, it is not offered to the public, and it has no users other than its owner.

What it does

It connects an MCP-compatible AI assistant to Gmail so the operator can search and read his own mail, draft and send replies, handle attachments, and organize messages with labels, across several of his own Google accounts, each authorized separately.

How it works

The application runs on Cloudflare Workers infrastructure controlled by its owner. Each connection is authorized by its own Google sign-in and is permanently bound to the single mailbox that authorized it. Access is limited by an explicit allow-list of addresses; no other account can sign in.

What it requests

The Gmail gmail.modify scope, which covers reading, sending, labeling and moving messages to trash. It does not request permanent deletion, and it does not request access to mailbox settings, so it cannot create filters, forwarding rules, or auto-replies. It requests userinfo.email and userinfo.profile solely to identify which account signed in.

Contact

Michael Knowles - mikeknowles79@gmail.com