Mailbox vs Whatsapp

In-depth architectural comparison of the Mailbox and Whatsapp 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?

M

Choose Mailbox when:

• You need dedicated capabilities in the Communication domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: No auth required (Free / Open Source).

Explore Mailbox Details

Choose Whatsapp when:

• You need dedicated capabilities in the Communication domain.
• You prefer local stdio subprocess transport architecture.
• Your security boundary fits: No auth required (Free / Open Source).

Explore Whatsapp Details

Feature & Specification Comparison

Specification	M Mailbox Communication	Whatsapp Communication
Summary	Physical mail API for AI agents. Send letters, certified mail, postcards from code via MCP.	Send WhatsApp messages from Cursor, Claude Code, and Codex via MCP.
Category & Scope	Communication	Communication
Quality signal

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": {
    "mailbox": {
      "command": "npx",
      "args": [
        "-y",
        "mailbox"
      ]
    }
  }
}

{
  "mcpServers": {
    "whatsapp": {
      "command": "npx",
      "args": [
        "-y",
        "@gaviwhatsapp/mcp"
      ]
    }
  }
}

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