Koskamo

SMTPing Email Verification MCP

An MCP server that allows AI agents to verify email addresses, clean lists, and check against spamtrap, disposable, spambot, and complainer lists using the SMTPing platform. It supports single verification, bulk list processing, and threat checking via tools like verify_email, verify_list, and check_threat.

Visit SMTPing

Endpoint and access

OAuth sign-in: the first time you connect, your client opens the vendor's own authorization prompt in a browser.

SMTPing Email Verification MCP logo, by SMTPingCommunity listingStreamable HTTPOAuth sign-inEndpoint checked 2026-11-01Published by SMTPing
You need:sign in with your SMTPing API keyCreate a free account
MCP endpoint (Streamable HTTP)
https://mcp.smtping.com/mcp
Vendor documentation

What you can do with it

  • Verify individual email addresses for deliverability
  • Clean and validate bulk email lists
  • Check emails against spamtrap and disposable lists
  • Monitor account credit usage

Source and maintenance

Community listingRegistry 1.0.1
mcp-registry: io.github.smtping/smtping-mcp@1.0.1Source repositoryProject website
Maintenance checked

Tools

Reported by the attributed source; not independently observed by Koskamo.

No tool definitions available.

30-day availability

Aggregated from read-only remote checks; this is not a tool-execution or security guarantee.

Successful checks
1 of 1 (100%)
Average latency
185 ms
95th percentile latency
185 ms

Maintenance history

Public check and source-refresh events. Editorial and ownership records remain private.

  • · probe · passed · 185 ms · metadata changed · refuses unauthenticated initialize (HTTP 401)

Connect from your client

Each snippet registers the same endpoint; pick the client you use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Claude Code

Run this once in a terminal. It registers the remote server. Use --scope project to write .mcp.json for the repo.
Claude Code configuration
claude mcp add --transport http smtping-mcp https://mcp.smtping.com/mcp

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).
Codex configuration
codex mcp add smtping-mcp --url https://mcp.smtping.com/mcp

Cursor

Merge this server into .cursor/mcp.json in your project, then enable smtping-mcp in your MCP settings.
Cursor configuration
{
  "mcpServers": {
    "smtping-mcp": {
      "url": "https://mcp.smtping.com/mcp"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure).
Cline configuration
{
  "mcpServers": {
    "smtping-mcp": {
      "type": "streamableHttp",
      "url": "https://mcp.smtping.com/mcp",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start smtping-mcp and inspect its tools.
VS Code configuration
{
  "servers": {
    "smtping-mcp": {
      "type": "http",
      "url": "https://mcp.smtping.com/mcp"
    }
  }
}

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.
Gemini CLI configuration
gemini mcp add --transport http smtping-mcp https://mcp.smtping.com/mcp

Claude Desktop

Merge this into claude_desktop_config.json (macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\), then restart Claude Desktop.
Claude Desktop configuration
{
  "mcpServers": {
    "smtping-mcp": {
      "url": "https://mcp.smtping.com/mcp"
    }
  }
}

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.
Windsurf configuration
{
  "mcpServers": {
    "smtping-mcp": {
      "serverUrl": "https://mcp.smtping.com/mcp"
    }
  }
}

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