Email Preflight

Connect Remote server

claude mcp add --transport http email-preflight https://email-preflight-mcp.onrender.com/mcp

{
  "mcpServers": {
    "email-preflight": {
      "url": "https://email-preflight-mcp.onrender.com/mcp"
    }
  }
}

{
  "servers": {
    "email-preflight": {
      "type": "http",
      "url": "https://email-preflight-mcp.onrender.com/mcp"
    }
  }
}

Settings > Connectors > Add custom connector
URL: https://email-preflight-mcp.onrender.com/mcp

Tools 3 found in our last check

• email_preflight

  Use before sending or processing an email when you need current preflight facts about the address. For $0.001 USDC on Base mainnet, the existing Email Preflight API checks six facts: syntax validity, domain availability, MX availability, disposable-email detection, role-account…

• email_check_mini

  Check email syntax, MX and local domain classes with the existing API. $0.001 USDC on Base mainnet. MX does not prove mailbox existence. Unpaid calls return x402 v2 requirements for this request. A compatible client may repeat identical arguments with its own PaymentPayload in p…

• url_preflight

  Inspect public HTTP/HTTPS URL response metadata through the existing safe URL API. $0.001 USDC on Base mainnet. Unpaid calls return x402 v2 requirements. A compatible client may repeat the identical url argument with its own signed PaymentPayload in params._meta["x402/payment"].…

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