Mailbox MCP Server

by jgaleaio.github.jgalea/mailbox-mcpv0.9.2

Multi-account email MCP server for Gmail, IMAP, and JMAP: search, send, drafts, labels.

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Active4d ago

Install Mailbox MCP server

claude mcp add mailbox-jgalea -e MAILBOX_MCP_PASSPHRASE='<mailbox-mcp-passphrase>' -- npx -y mailbox-mcp

{
  "mcpServers": {
    "mailbox-jgalea": {
      "command": "npx",
      "args": [
        "-y",
        "mailbox-mcp"
      ],
      "env": {
        "MAILBOX_MCP_PASSPHRASE": "<mailbox-mcp-passphrase>"
      }
    }
  }
}

Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (project).

{
  "mcpServers": {
    "mailbox-jgalea": {
      "command": "npx",
      "args": [
        "-y",
        "mailbox-mcp"
      ],
      "env": {
        "MAILBOX_MCP_PASSPHRASE": "<mailbox-mcp-passphrase>"
      }
    }
  }
}

Settings → Developer → Edit Config (claude_desktop_config.json), then restart.

{
  "servers": {
    "mailbox-jgalea": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "mailbox-mcp"
      ],
      "env": {
        "MAILBOX_MCP_PASSPHRASE": "<mailbox-mcp-passphrase>"
      }
    }
  }
}

Add to .vscode/mcp.json in your workspace.

{
  "mcpServers": {
    "mailbox-jgalea": {
      "command": "npx",
      "args": [
        "-y",
        "mailbox-mcp"
      ],
      "env": {
        "MAILBOX_MCP_PASSPHRASE": "<mailbox-mcp-passphrase>"
      }
    }
  }
}

Add to ~/.codeium/windsurf/mcp_config.json.

Configuration

Variable	Required	Secret	Description
MAILBOX_MCP_PASSPHRASE	—	yes	Passphrase used to encrypt IMAP/JMAP credentials at rest. Required for IMAP and JMAP accounts.

Freshness

Active — last maintenance signal 4d ago. The newest of the signals below sets the band.

Last commit (default branch)
2026-10-05 · 4d ago · GitHub
Latest release
2026-04-20 · 6mo ago · GitHub · v0.6.1
Package published
no data · npm/PyPI
Registry entry updated
2026-06-17 · 4mo ago · official registry · v0.9.2

FAQ

›How do I install the Mailbox MCP server in Claude Code?

Run: claude mcp add mailbox-jgalea -e MAILBOX_MCP_PASSPHRASE='<mailbox-mcp-passphrase>' -- npx -y mailbox-mcp. For Cursor, VS Code, Claude Desktop and Windsurf, use the install tabs above.

›Does Mailbox require an API key?

Yes. It expects MAILBOX_MCP_PASSPHRASE, of which 1 is a secret.

›Can I use Mailbox as a remote (hosted) MCP server?

No hosted endpoint is published; it runs locally over stdio.

›Is Mailbox in the official MCP registry?

Yes, as io.github.jgalea/mailbox-mcp.