protonmail-mcp

Overview

This MCP server provides a standardized way to send emails using Protonmail's SMTP service. It exposes a simple send_email tool that supports multiple recipients, CC/BCC fields, and both plain text and HTML content. The server maintains compatibility with both Claude Desktop and Cline VSCode extension by following the MCP protocol standard. Configuration requires setting environment variables for Protonmail credentials and SMTP connection details.

Try asking AI

After installing, here are 5 things you can ask your AI assistant:

• send_email

  Sends an email using your Protonmail SMTP account.

  Try:Send an email to john@example.com with subject 'Meeting Tomorrow' and body 'Let's meet at 10 AM.'Try:Send a test email to myself with HTML content including a formatted table.Try:Send an email to the team with project updates, CCing the manager.

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Installation

git clone https://github.com/amotivv/protonmail-mcp.git
cd protonmail-mcp

npm install
npm run build

{
  "mcpServers": {
    "protonmail": {
      "command": "node",
      "args": ["/path/to/protonmail-mcp/build/index.js"]
    }
  }
}

FAQ

Do I need to enable SMTP access in my Protonmail account?

Yes, you need to have SMTP enabled in your Protonmail account and use the SMTP password provided by Protonmail, not your regular account password.

Can I use this server with other MCP-compatible clients?

Yes, any MCP client that supports environment variable configuration for servers should be compatible with this MCP server.

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