Emailens MCP Server

by emailensio.github.emailens/mcpv0.6.2

Lint HTML email with Emailens: rendering issues in Gmail, Outlook, Apple Mail and more, per-client CSS compatibility scores, dark mode simulation and fixes.

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Active2d ago

Install Emailens MCP server

claude mcp add emailens -e EMAILENS_API_KEY='<emailens-api-key>' -- npx -y @emailens/mcp

{
  "mcpServers": {
    "emailens": {
      "command": "npx",
      "args": [
        "-y",
        "@emailens/mcp"
      ],
      "env": {
        "EMAILENS_API_KEY": "<emailens-api-key>"
      }
    }
  }
}

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

{
  "mcpServers": {
    "emailens": {
      "command": "npx",
      "args": [
        "-y",
        "@emailens/mcp"
      ],
      "env": {
        "EMAILENS_API_KEY": "<emailens-api-key>"
      }
    }
  }
}

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

{
  "servers": {
    "emailens": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@emailens/mcp"
      ],
      "env": {
        "EMAILENS_API_KEY": "<emailens-api-key>"
      }
    }
  }
}

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

{
  "mcpServers": {
    "emailens": {
      "command": "npx",
      "args": [
        "-y",
        "@emailens/mcp"
      ],
      "env": {
        "EMAILENS_API_KEY": "<emailens-api-key>"
      }
    }
  }
}

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

Configuration

Variable	Required	Secret	Description
EMAILENS_API_KEY	—	yes	API key for screenshots and sharing. Get one free at emailens.dev/settings/api-keys

Remote endpoints

streamable-httphttps://emailens.dev/api/mcp

Freshness

Active — last maintenance signal 2d ago. The newest of the signals below sets the band.

Last commit (default branch)
2026-10-07 · 2d ago · GitHub
Latest release
no data · GitHub
Package published
no data · npm/PyPI
Registry entry updated
2026-08-23 · 47d ago · official registry · v0.6.2

FAQ

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

Run: claude mcp add emailens -e EMAILENS_API_KEY='<emailens-api-key>' -- npx -y @emailens/mcp. For Cursor, VS Code, Claude Desktop and Windsurf, use the install tabs above.

›Does Emailens require an API key?

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

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

Yes — it offers both a hosted endpoint and a local stdio package.

›Is Emailens in the official MCP registry?

Yes, as io.github.emailens/mcp.