SMTPing Email Verification
Verify email addresses, clean lists and check spamtrap, disposable, spambot and complainer lists.
Runs on your machine from its package; the steps are below.
What it does
- Reads
- Writes
- High impact
At most: only reads or looks up information.
What it costs
FreeOdel charges nothing per call. The publisher may charge for its own service.
Runs locally over stdio
This server isn't hosted — your MCP client launches it from a package registry. Use one of the commands below, or drop the config into your client (e.g. Claude Desktop).
Run
npx -y @smtping/mcp
MCP client config
{
"mcpServers": {
"smtping-email-verification": {
"command": "npx",
"args": [
"-y",
"@smtping/mcp"
]
}
}
}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
| 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 |
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
If npx is not found, use "command": "cmd" and "args": ["/c", "npx", "-y", "@smtping/mcp"].
Privacy
Addresses are sent to the SMTPing API only when a tool is called. See the privacy policy.
Links
MIT License
