Instant Email Verification

Stop email bounces. Protect your sender score.

Sending emails to dead or fake addresses gets your domain blacklisted. AlienVerify checks any email address in milliseconds to confirm mail servers exist, catch burner emails, and guarantee your messages actually land.

No credit card required. 10k requests/mo free.

Live API Tester

Run a test to see the JSON response payload.

Three lines of code. Zero bloat.

Designed specifically for autonomous agent loops and Node.js environments.

agent-script.ts

import { AlienVerifier } from 'alien-verify-sdk';

// Initialize with your free API key
const verifier = new AlienVerifier("sk_live_12345");

async function checkLead(email: string) {
  const result = await verifier.verifyEmail(email);
  
  if (result.valid) {
    // Safe to send! MX records confirmed.
    sendColdEmail(email);
  
}