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SMTPing Email Verification

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

Code source Site web Documentation

Installation

Ajoutez ceci à la configuration MCP de votre client (Claude Desktop : claude_desktop_config.json ; Cursor : .cursor/mcp.json ; VS Code et les autres utilisent la même forme « mcpServers »).

Remote (streamable-http)
Claude Code 
claude mcp add --transport http smtping-email-verification 'https://mcp.smtping.com/mcp'
Configuration JSON (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "smtping-email-verification": {
            "type": "http",
            "url": "https://mcp.smtping.com/mcp"
        }
    }
}
NPM package @smtping/mcp
Claude Code 
claude mcp add smtping-email-verification -e 'SMTPING_API_KEY=<your smtping_api_key>' -- npx -y @smtping/mcp@1.0.1
Configuration JSON (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "smtping-email-verification": {
            "command": "npx",
            "args": [
                "-y",
                "@smtping/mcp@1.0.1"
            ],
            "env": {
                "SMTPING_API_KEY": "<your smtping_api_key>"
            }
        }
    }
}

Variables d'environnement

  • SMTPING_API_KEY obligatoire secret Your SMTPing API key, from https://app.smtping.com

Documentation

Tirée du README du projet sur GitHub, actualisée chaque semaine. Les liens ouvrent GitHub.

Sommaire
  1. SMTPing MCP server
  2. Tools
  3. Setup
  4. Privacy
  5. Links

SMTPing MCP server

Official Model Context Protocol server for SMTPing. It lets Claude, Cursor, VS Code, Windsurf and any MCP client verify email addresses in a conversation.

"Verify these 40 leads and tell me which ones are safe to email."

Tools

toolwhat it doescredits
verify_emailVerifies one address: status plus band (safe, avoid, judgement)1
verify_listVerifies a list as one bulk job (up to 100,000), waits for results1 per unique address
get_bulk_jobProgress and results of a bulk job0
check_threatLooks up one address in the spamtrap, disposable, spambot or complainer list1
get_creditsRemaining credits and plan0

Setup

Create an API key in the SMTPing dashboard, then add the server to your client. Node 18 or later is required.

Claude Desktop

Settings > Developer > Edit Config, then add to claude_desktop_config.json:

{
  "mcpServers": {
    "smtping": {
      "command": "npx",
      "args": ["-y", "@smtping/mcp"],
      "env": { "SMTPING_API_KEY": "sk_live_your_key_here" }
    }
  }
}

Restart Claude Desktop.

Claude Code
claude mcp add smtping -e SMTPING_API_KEY=sk_live_your_key_here -- npx -y @smtping/mcp
Cursor

~/.cursor/mcp.json (or .cursor/mcp.json in a project): same JSON block as Claude Desktop.

VS Code

.vscode/mcp.json:

{
  "servers": {
    "smtping": {
      "command": "npx",
      "args": ["-y", "@smtping/mcp"],
      "env": { "SMTPING_API_KEY": "sk_live_your_key_here" }
    }
  }
}
Windows troubleshooting

npx is not found: use "command": "cmd" and "args": ["/c", "npx", "-y", "@smtping/mcp"].

"Request timed out" or "Server disconnected" on first start: the first npx run downloads the package and can take longer than the client's 60 second startup limit. Install the server once, then point the client to it:

  1. In a terminal: npm install -g @smtping/mcp
  2. Replace the smtping block with:
"smtping": {
  "command": "node",
  "args": ["C:\\Users\\YOUR_NAME\\AppData\\Roaming\\npm\\node_modules\\@smtping\\mcp\\index.js"],
  "env": { "SMTPING_API_KEY": "sk_live_your_key_here" }
}

Replace YOUR_NAME with your Windows user folder (spaces are fine) and use double backslashes. Run echo %APPDATA% to see the exact path. This form also avoids issues with .cmd launchers when the user folder contains a space.

  1. Quit the client completely (tray icon > Quit) and reopen it.

To update later: npm install -g @smtping/mcp@latest.

Logs: Claude Desktop writes them to %APPDATA%\Claude\logs\mcp-server-smtping.log.

Privacy

Addresses are sent to the SMTPing API only when a tool is called. See the privacy policy.

MIT License

Questions fréquentes

Qu'est-ce que SMTPing Email Verification ?

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

Comment installer SMTPing Email Verification ?

Il fonctionne comme serveur distant. Dans Claude Code : claude mcp add --transport http smtping-email-verification 'https://mcp.smtping.com/mcp'. Pour les autres clients, collez la configuration JSON de cette page dans leurs réglages MCP.

Faut-il une clé API pour SMTPing Email Verification ?

Oui. Il attend SMTPING_API_KEY, à renseigner dans sa configuration.

SMTPing Email Verification est-il open source ?

Oui. Son code est sur GitHub sous licence MIT.

Qui maintient SMTPing Email Verification ?

Il est publié par smtping. AI.tn le référence sans le maintenir ni le recommander.

Issu du registre MCP officiel. Être listé n'est pas une recommandation : vérifiez le code et les permissions d'un serveur avant de lui donner accès à vos données.