Koskamo

Proton Safe MCP

A draft-only Proton Mail MCP server that reads and searches mail, extracts bounded attachment text, and creates explicitly confirmed drafts without sending, deleting, or moving messages. It runs locally over STDIO for any MCP-compatible client.

Package and access

Local package with source-attributed installation metadata. Koskamo does not execute packages during review.

Proton Safe MCP logo, by François BossièreCommunity listingLocal stdioSource reviewed; not executedPublished by François Bossière
You need:Requires Proton Mail Bridge, a compatible paid Proton plan and local ChatGPT desktop / Codex
Vendor documentation

What you can do with it

  • Find and summarize email conversations
  • Extract text from bounded attachments like PDFs and TXTs
  • Create explicitly confirmed drafts for manual review
  • Search mail via Proton Mail Bridge

Source and maintenance

Community listingRegistry 2.3.2
mcp-registry: io.github.fbossiere/proton-safe-mcp@2.3.2Source repositoryProject website
Maintenance checked

Packages and installation

Source-provided package data. Koskamo has not executed or live-probed this package.

proton-safe-mcp 2.3.2

pypiuvx
proton-safe-mcp package definition
{
  "version": "2.3.2",
  "transport": "stdio",
  "identifier": "proton-safe-mcp",
  "runtimeHint": "uvx",
  "registryType": "pypi",
  "packageArguments": [
    {
      "type": "positional",
      "value": "serve"
    }
  ],
  "environmentVariables": [
    {
      "name": "PROTON_BRIDGE_USER",
      "format": "string",
      "isRequired": true,
      "description": "Proton address configured in Proton Mail Bridge",
      "placeholder": "your-address@proton.me"
    },
    {
      "name": "PROTON_IMAP_PORT",
      "format": "number",
      "default": "1143",
      "description": "Local IMAP port shown by Proton Mail Bridge"
    }
  ]
}

Tools

Reported by the attributed source; not independently observed by Koskamo.

No tool definitions available.

Connect from your client

Each snippet configures the same source-provided package; replace placeholders before use.

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Cursor

Merge this local stdio configuration, replace every placeholder environment value, and restart Cursor. Koskamo has not executed this package.
Cursor configuration
{
  "mcpServers": {
    "proton-safe-mcp": {
      "command": "uvx",
      "args": [
        "proton-safe-mcp==2.3.2",
        "serve"
      ],
      "env": {
        "PROTON_BRIDGE_USER": "<YOUR_PROTON_BRIDGE_USER>",
        "PROTON_IMAP_PORT": "<YOUR_PROTON_IMAP_PORT>"
      }
    }
  }
}

Cline

Merge this local stdio configuration, replace every placeholder environment value, and restart Cline. Koskamo has not executed this package.
Cline configuration
{
  "mcpServers": {
    "proton-safe-mcp": {
      "command": "uvx",
      "args": [
        "proton-safe-mcp==2.3.2",
        "serve"
      ],
      "env": {
        "PROTON_BRIDGE_USER": "<YOUR_PROTON_BRIDGE_USER>",
        "PROTON_IMAP_PORT": "<YOUR_PROTON_IMAP_PORT>"
      }
    }
  }
}

VS Code

Merge this local stdio configuration, replace every placeholder environment value, and restart VS Code. Koskamo has not executed this package.
VS Code configuration
{
  "servers": {
    "proton-safe-mcp": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "proton-safe-mcp==2.3.2",
        "serve"
      ],
      "env": {
        "PROTON_BRIDGE_USER": "<YOUR_PROTON_BRIDGE_USER>",
        "PROTON_IMAP_PORT": "<YOUR_PROTON_IMAP_PORT>"
      }
    }
  }
}

Claude Desktop

Merge this local stdio configuration, replace every placeholder environment value, and restart Claude Desktop. Koskamo has not executed this package.
Claude Desktop configuration
{
  "mcpServers": {
    "proton-safe-mcp": {
      "command": "uvx",
      "args": [
        "proton-safe-mcp==2.3.2",
        "serve"
      ],
      "env": {
        "PROTON_BRIDGE_USER": "<YOUR_PROTON_BRIDGE_USER>",
        "PROTON_IMAP_PORT": "<YOUR_PROTON_IMAP_PORT>"
      }
    }
  }
}

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