Proton Mail MCP vs MCP Discord Bridge

In-depth architectural comparison of the Proton Mail MCP and MCP Discord Bridge MCP servers. Compare execution transports, security boundaries, tool capabilities, quality scores, and ready-to-paste client installation snippets for Claude, Cursor, Windsurf, and VS Code.

Which MCP Server Should You Choose?

Choose Proton Mail MCP when:

• You need dedicated capabilities in the Communication domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: other (Free / Open Source).
• You have access to required keys: PROTONMAIL_USERNAME, PROTONMAIL_PASSWORD.
• Primary tools included: send_email, reply_email, reply_all_email.

Explore Proton Mail MCP Details

Choose MCP Discord Bridge when:

• You need dedicated capabilities in the Communication domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: API Key required (Free / Open Source).
• You have access to required keys: DISCORD_TOKEN.
• Primary tools included: list_guilds, list_channels, create_category.

Feature & Specification Comparison

Specification	Proton Mail MCP sethbang Communication	MCP Discord Bridge iprashantraj Communication
Summary	Unofficial Proton Mail MCP server — send, read, search, and organize email over SMTP and IMAP (via Proton Mail Bridge). Bulk ops with dry-run previews, read-only mode, and Trash-by-default deletes. Not affiliated with Proton AG.	Discord MCP server with 46 tools for channels, messages, forums, webhooks, members, roles, threads, and moderation. Zero-install via npx -y mcp-discord-bridge. Also runs as a standalone bot with slash commands.
Category & Scope

Tools & Capabilities Breakdown

Ready-to-Paste Client Configurations

Paste either (or both) of these JSON server blocks into your client config file (e.g. claude_desktop_config.json or ~/.cursor/mcp.json).

{
  "mcpServers": {
    "sethbang-proton-mail-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "proton-mail-mcp"
      ],
      "env": {
        "PROTONMAIL_USERNAME": "YOUR_PROTONMAIL_USERNAME_HERE",
        "PROTONMAIL_PASSWORD": "YOUR_PROTONMAIL_PASSWORD_HERE"
      }
    }
  }
}

{
  "mcpServers": {
    "iprashantraj-mcp-discord-bridge": {
      "command": "npx",
      "args": [
        "-y",
        "mcp-discord-bridge"
      ],
      "env": {
        "DISCORD_TOKEN": "YOUR_DISCORD_TOKEN_HERE"
      }
    }
  }
}

Related MCP Server Comparisons