Email Validator API

const response = await fetch('https://api.corenexis.com/email-validator/v1', {
  method: 'POST',
  headers: {
    'X-API-Key': 'your_api_key',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({ email: 'john.doe@company.com' })
});

const result = await response.json();

if (result.success) {
  const d = result.data;
  console.log('Status:', d.status);            // deliverable | risky | undeliverable | unknown | invalid
  console.log('Confidence:', d.confidence);    // 0.0 - 1.0
  console.log('Mailbox accepted:', d.smtp.deliverable);
  console.log('Catch-all:', d.smtp.catch_all);
}

import requests

url = "https://api.corenexis.com/email-validator/v1"
headers = {
    "X-API-Key": "your_api_key",
    "Content-Type": "application/json"
}
data = {"email": "john.doe@company.com"}

result = requests.post(url, headers=headers, json=data).json()

if result["success"]:
    d = result["data"]
    print("Status:", d["status"])
    print("Confidence:", d["confidence"])
    print("Mailbox accepted:", d["smtp"]["deliverable"])
    print("Catch-all:", d["smtp"]["catch_all"])

$ch = curl_init();

curl_setopt_array($ch, [
    CURLOPT_URL => "https://api.corenexis.com/email-validator/v1",
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_POST => true,
    CURLOPT_HTTPHEADER => [
        "X-API-Key: your_api_key",
        "Content-Type: application/json"
    ],
    CURLOPT_POSTFIELDS => json_encode([
        "email" => "john.doe@company.com"
    ])
]);

$data = json_decode(curl_exec($ch), true);

if ($data["success"]) {
    echo "Status: "  . $data["data"]["status"] . "\n";
    echo "Confidence: " . $data["data"]["confidence"] . "\n";
    echo "Catch-all: " . ($data["data"]["smtp"]["catch_all"] ? "Yes" : "No") . "\n";
}

const email = encodeURIComponent('john.doe@company.com');

const response = await fetch(`https://api.corenexis.com/email-validator/v1?email=${email}`, {
  method: 'GET',
  headers: { 'X-API-Key': 'your_api_key' }
});

const data = await response.json();
console.log(data);

const formData = new FormData();
formData.append('email', 'john.doe@company.com');

const response = await fetch('https://api.corenexis.com/email-validator/v1', {
  method: 'POST',
  headers: { 'X-API-Key': 'your_api_key' },
  body: formData
});

const data = await response.json();
console.log(data.data.status);

{
  "status": "deliverable",
  "confidence": 0.8,
  "is_free_provider": true,
  "smtp": {
    "checked": false,
    "deliverable": true,
    "catch_all": false,
    "code": null,
    "reason": "trusted_provider",
    "mx_host": "gmail-smtp-in.l.google.com"
  }
}

// 400 — Missing Email Parameter
{
  "success": false,
  "error": "Email is required."
}

// 429 — Rate Limit Exceeded
{
  "success": false,
  "code": "RATE_LIMIT_EXCEEDED",
  "message": "Too many requests. Please wait before making another request."
}

// 429 — Monthly Quota Exceeded
{
  "success": false,
  "code": "QUOTA_EXCEEDED",
  "message": "Monthly validation quota exceeded. Upgrade your plan for more."
}