Validate emails without sending a single message. Reduce bounce rates, protect sender reputation, and clean your mailing lists — all from your MCP-compatible client (Claude Desktop, Cursor, VS Code + Continue, etc.).

Features

Tool	Description
`verify_email`	Full email validation: format check, MX record lookup, disposable email detection, typo suggestion, deliverability score
`verify_email_batch`	Batch verify multiple emails in a single call
`is_disposable_email`	Check if a domain is a known disposable/temporary email provider

How It Works

Zero external API dependencies. Everything runs locally using:

Python re — RFC-compliant format validation
Python socket — MX record and domain resolution
Hardcoded disposable domain list — 200+ known disposable email providers
Typo detection engine — Catches common typos (gmial.com → gmail.com, hotmal.com → hotmail.com, etc.)

Response Format

{
  "email": "test@example.com",
  "valid_format": true,
  "has_mx_record": true,
  "is_disposable": false,
  "typo_suggestion": null,
  "score": 0.95,
  "details": "Email has valid format, MX records found, not a disposable provider"
}

Pricing & Rate Limits

Plan	Price	Limit
Free	$0	50 verifications per server instance
Pro	$19/month	Unlimited verifications

Usage

With Claude Desktop (Free Tier)

Add to your claude_desktop_config.json:

{
  "mcpServers": {
    "email-verify": {
      "command": "python",
      "args": ["path/to/email-verify-mcp/server.py"]
    }
  }
}

With Claude Desktop (Pro Tier)

{
  "mcpServers": {
    "email-verify": {
      "command": "python",
      "args": ["path/to/email-verify-mcp/server.py", "--pro-key", "PROL_AGENTPAY_DEMO"]
    }
  }
}

With Smithery

On Smithery, configure the proKey environment variable to use Pro mode.

From Command Line

pip install -r requirements.txt

# Free tier (50 calls)
python server.py

# Pro tier (unlimited)
python server.py --pro-key PROL_AGENTPAY_DEMO

Get a Pro Key

Subscribe Now — $19/month

After purchase, you'll receive a Pro key (PROL_XXX) to unlock unlimited email verifications.

Why Email Verification?

Reduce bounce rates — Invalid emails damage your sender reputation
Save money — Don't pay for emails that will never arrive
Improve deliverability — ISPs reward clean lists with better inbox placement
Protect domain reputation — High bounce rates can get you blacklisted