SMTPing Email Verification MCP Server

by smtpingio.github.smtping/smtping-mcpv1.0.0

Verify email addresses, clean lists and check spamtrap, disposable, spambot and complainer lists.

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Active2d ago

Install SMTPing Email Verification MCP server

claude mcp add smtping -e SMTPING_API_KEY='<smtping-api-key>' -- npx -y @smtping/mcp

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

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

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

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

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

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

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

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

Configuration

Variable	Required	Secret	Description
SMTPING_API_KEY	yes	yes	Your SMTPing API key, from https://app.smtping.com

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
2026-09-27 · 12d ago · GitHub · v1.0.0
Package published
no data · npm/PyPI
Registry entry updated
2026-09-27 · 12d ago · official registry · v1.0.0

FAQ

›How do I install the SMTPing Email Verification MCP server in Claude Code?

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

›Does SMTPing Email Verification require an API key?

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

›Can I use SMTPing Email Verification as a remote (hosted) MCP server?

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

›Is SMTPing Email Verification in the official MCP registry?

Yes, as io.github.smtping/smtping-mcp.