The full upstream README, mirrored here for reference. Install config, tool schemas, adoption signals, and an original overview live on the SMTPing Email Verification listing page.
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."
| tool | what it does | credits |
|---|---|---|
verify_email | Verifies one address: status plus band (safe, avoid, judgement) | 1 |
verify_list | Verifies a list as one bulk job (up to 100,000), waits for results | 1 per unique address |
get_bulk_job | Progress and results of a bulk job | 0 |
check_threat | Looks up one address in the spamtrap, disposable, spambot or complainer list | 1 |
get_credits | Remaining credits and plan | 0 |
Create an API key in the SMTPing dashboard, then add the server to your client. Node 18 or later is required.
Settings > Developer > Edit Config, then add to claude_desktop_config.json:
Restart Claude Desktop.
~/.cursor/mcp.json (or .cursor/mcp.json in a project): same JSON block as Claude Desktop.
.vscode/mcp.json:
If npx is not found, use "command": "cmd" and "args": ["/c", "npx", "-y", "@smtping/mcp"].
Addresses are sent to the SMTPing API only when a tool is called. See the privacy policy.
MIT License