Proton Mail Bridge Client

Name: Proton Mail Bridge Client
Author: googlarz

proton-mail-bridge-client · by googlarz

Local-first Proton Mail MCP server and CLI via Proton Bridge. Search, draft, send and organize mail from Claude Desktop, Claude Code or any MCP client. 96 tools, read-only and send-to-self modes.

47 6.8k/wk GitHub npm

No known CVEs

MIT license

Actively maintained

Last commit 2d ago

Works with most clients

Transport: stdio, sse, http

0 tools

Grade F

MCPpedia last refreshed this data 1d ago

Edit this pageView history

Proton Mail Bridge Client is an MCP server that local-first Proton Mail MCP server and CLI via Proton Bridge. Search, draft, send and organize mail from Claude Desktop, Claude Code or any MCP client. 96 tools, read-only and send-to-self modes. Its tool list has not been published yet over stdio, sse and http, requires no API key, and scores 65/100 on MCPpedia's security, maintenance and efficiency rubric.

AI / ML Communication

Step 1

Install in your client

Config is the same across clients - only the file and path differ.

Supported in Claude Desktopstdio, sse, http · Node 18+

Paste into ~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "proton-mail-bridge": {
      "env": {
        "PROTONMAIL_PASSWORD": "your-bridge-password",
        "PROTONMAIL_USERNAME": "you@proton.me",
        "PROTONMAIL_IMAP_HOST": "127.0.0.1",
        "PROTONMAIL_IMAP_PORT": "1143",
        "PROTONMAIL_SMTP_HOST": "127.0.0.1",
        "PROTONMAIL_SMTP_PORT": "1025",
        "PROTONMAIL_IMAP_SECURE": "false"
      },
      "command": "proton-mail-bridge-mcp"
    }
  }
}

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What Proton Mail Bridge Client does

____ ____ ___ _____ ___ _ _ __ __ _ ___ _ Bridge Client · CLI + Claude Desktop MCP for Proton Mail

Test This Server

This server supports HTTP transport. Be the first to test it - help the community know if it works.

Scored, not listed

Why this score

Five weighted categories - click any category to see the underlying evidence.

Score breakdown

65/100across 5 weighted dimensions

How we score →

0255075100

−35

Security

Maintenance

Efficiency

Documentation

Compatibility

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Security

OSV.dev

No known CVEs.

Checked proton-mail-bridge-client against OSV.dev.

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Frequently Asked Questions

Is Proton Mail Bridge Client safe to use?: Proton Mail Bridge Client has no known CVEs as of the latest MCPpedia security scan. Authentication requirements were not detected automatically - check the project's documentation before connecting in a shared environment. Licensed under MIT.
How do I install Proton Mail Bridge Client?: Proton Mail Bridge Client supports copy-paste install configs on its MCPpedia page for Claude Desktop, Cursor, and Claude Code. Scroll to the Quick Install section and select your client.
What AI clients work with Proton Mail Bridge Client?: Proton Mail Bridge Client is compatible with claude-desktop, cursor, claude-code. It uses stdio and sse and http transport.
Is Proton Mail Bridge Client actively maintained?: Proton Mail Bridge Client is actively maintained - last commit was 2 days ago. It has 47 GitHub stars.

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Community

Discussion

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Has anyone used this with Cursor?How do you handle auth?Any alternatives?

{ "mcpServers": { "proton-mail-bridge": { "env": { "PROTONMAIL_PASSWORD": "your-bridge-password", "PROTONMAIL_USERNAME": "you@proton.me", "PROTONMAIL_IMAP_HOST": "127.0.0.1", "PROTONMAIL_IMAP_PORT": "1143", "PROTONMAIL_SMTP_HOST": "127.0.0.1", "PROTONMAIL_SMTP_PORT": "1025", "PROTONMAIL_IMAP_SECURE": "false" }, "command": "proton-mail-bridge-mcp" } } }

Frequently Asked Questions

Is Proton Mail Bridge Client safe to use?

Proton Mail Bridge Client has no known CVEs as of the latest MCPpedia security scan. Authentication requirements were not detected automatically - check the project's documentation before connecting in a shared environment. Licensed under MIT.

How do I install Proton Mail Bridge Client?

Proton Mail Bridge Client supports copy-paste install configs on its MCPpedia page for Claude Desktop, Cursor, and Claude Code. Scroll to the Quick Install section and select your client.

What AI clients work with Proton Mail Bridge Client?

Proton Mail Bridge Client is compatible with claude-desktop, cursor, claude-code. It uses stdio and sse and http transport.

Is Proton Mail Bridge Client actively maintained?

Proton Mail Bridge Client is actively maintained - last commit was 2 days ago. It has 47 GitHub stars.