EmailVerify MCP Server

A Model Context Protocol (MCP) server that provides professional email validation and discovery capabilities using EmailVerify.io. This server enables LLMs to verify email deliverability, detect risky addresses, and find professional contact information directly within your AI chat.

Key Features

• Sub-100ms API Response: Optimized for real-time AI workflows.
• High Accuracy: Advanced SMTP-level verification and domain analysis.
• Enterprise Ready: Detects catch-all, disposable, and fraudulent emails.
• Professional Discovery: Find verified email addresses by name and domain.
• Deterministic Tools: Structured data output for reliable LLM reasoning.

Requirements

• Node.js: 18.0.0 or newer
• MCP Client: Cursor, Claude Desktop, Claude Code, VS Code, or any other compatible client.

Getting started

To use this MCP server, you'll need an EmailVerify API key. 👉 Get your API key here: https://app.emailverify.io/api-setup

First, install and configure the EmailVerify MCP server using the Master Setup command.

🚀 Master Setup (Zero-Config)

npx @emailverifyio/emailverify-mcp setup

This command will prompt you for your API key, validate it, and automatically offer to configure Claude Code for you. Your key is saved locally in ~/.emailverify-mcp.json.

Standard Configuration

For most tools, use the following JSON configuration:

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

🔌 Integration Guide (All Clients)

Amp

Add via the Amp VS Code extension settings screen or by updating your settings.json file:

"amp.mcpServers": {
  "emailverify": {
    "command": "npx",
    "args": ["-y", "@emailverifyio/emailverify-mcp"]
  }
}

Antigravity

Add via the Antigravity settings or by updating your configuration file:

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

Claude Code

Use the Claude Code CLI to add the server:

claude mcp add emailverify -- npx -y @emailverifyio/emailverify-mcp

Claude Desktop

Add to your claude_desktop_config.json (Windows: %APPDATA%\Claude\, Mac/Linux: ~/.config/Claude/):

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

Cline

Add the standard config to your cline_mcp_settings.json file:

{
  "mcpServers": {
    "emailverify": {
      "type": "stdio",
      "command": "npx",
      "args": ["-y", "@emailverifyio/emailverify-mcp"]
    }
  }
}

Codex

Use the Codex CLI:

codex mcp add emailverify npx "@emailverifyio/emailverify-mcp"

Copilot CLI

Use the interactively or add to ~/.copilot/mcp-config.json:

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

Cursor

Go to Cursor Settings -> MCP -> Add new MCP Server.

• Name: emailverify
• Type: command
• Command: npx @emailverifyio/emailverify-mcp

Factory / Droid

Use the Factory CLI:

droid mcp add emailverify "npx -y @emailverifyio/emailverify-mcp"

Gemini CLI

Follow the MCP install guide and use the standard config.

Goose

Go to Advanced settings -> Extensions -> Add custom extension.

• Type: STDIO
• Command: npx
• Args: ["-y", "@emailverifyio/emailverify-mcp"]

Junie

Add to .junie/mcp/mcp.json:

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

Kiro

Add to .kiro/settings/mcp.json:

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

LM Studio

Go to Program -> Install -> Edit mcp.json and use the standard config.

opencode

Add to ~/.config/opencode/opencode.json:

"mcp": {
  "emailverify": {
    "type": "local",
    "command": ["npx", "-y", "@emailverifyio/emailverify-mcp"],
    "enabled": true
  }
}

Qodo Gen

Open Qodo Gen chat panel -> Connect more tools -> + Add new MCP -> Paste standard config.

VS Code

Use the VS Code CLI:

code --add-mcp '{"name":"emailverify","command":"npx","args":["-y","@emailverifyio/emailverify-mcp"]}'

Warp

Go to Settings -> AI -> Manage MCP Servers -> + Add and use the standard config.

Windsurf

Follow Windsurf MCP documentation and use the standard config.

Zed Editor

Add this to your settings.json:

{
  "node": {
    "mcp_servers": {
      "emailverify": {
        "command": "npx",
        "args": ["-y", "@emailverifyio/emailverify-mcp"]
      }
    }
  }
}

🛠 Tools

Core Validation

| Tool | Description | Parameters | |------|-------------|------------| | validate_email | Verify a single email address for deliverability and risk. | email (string) | | validate_batch | Start an asynchronous task to validate up to 250 emails. | emails (array), title (string) |

Discovery & Account

| Tool | Description | Parameters | |------|-------------|------------| | find_email | Discover a professional email using a person's name and domain. | name (string), domain (string) | | get_balance | Check your remaining credits and account status. | None | | get_bulk_results | Retrieve results for a previously started bulk validation task. | taskId (string) |

💡 Practical AI Use Cases

Sales & Prospecting

"Find the email for John Doe at stripe.com and tell me if it's safe to send."

List Cleaning

"I have a list of emails in this file. Use EmailVerify to check them and highlight which ones are disposable or catch-all."

⚙️ Configuration

The server supports the following command-line flags:

| Option | Description | Environment Variable | |--------|-------------|----------------------| | --api-key | Your EmailVerify.io API Key | EMAILVERIFY_API_KEY | | --base-url | API Base URL (Default: https://app.emailverify.io) | EMAILVERIFY_BASE_URL |

🔗 Resources

• EmailVerify.io Website
• EmailVerify MCP Guide
• API Documentation

📄 License

Apache-2.0