https://yn-labs.com/en/categories/oss/Recent content in Oss on 万屋猫LabsHugoenThu, 02 Apr 2026 00:00:00 +0900https://yn-labs.com/en/posts/protonmail-mcp/Thu, 02 Apr 2026 00:00:00 +0900https://yn-labs.com/en/posts/protonmail-mcp/<h2 id="the-problem">The Problem</h2> <p>Every existing ProtonMail MCP server requires Proton Bridge — a paid desktop app. Free ProtonMail users have no way to integrate their email with AI assistants.</p> <p>I found 11 existing ProtonMail MCP projects on GitHub. All of them require Bridge.</p> <h2 id="the-solution">The Solution</h2> <p>I built <a href="https://github.com/ichiburn/protonmail-mcp">protonmail-mcp</a> — a Go MCP server that talks directly to Proton&rsquo;s API using only their official open-source libraries:</p> <ul> <li><strong><a href="https://github.com/ProtonMail/go-proton-api">go-proton-api</a></strong> — The same library used by Proton Bridge itself</li> <li><strong><a href="https://github.com/ProtonMail/go-srp">go-srp</a></strong> — SRP authentication</li> <li><strong><a href="https://github.com/ProtonMail/gopenpgp">gopenpgp</a></strong> — PGP encryption/decryption</li> </ul> <p>No third-party API wrappers. No supply chain risk from unknown packages handling your passwords and private keys.</p>