Best Custom Webhook Phone Validation API & Email Verification Integration 2025

// Webhook endpoint to validate emails from form submissions
app.post('/webhook/validate-email', async (req, res) => {
  const { email } = req.body;
  
  try {
    const response = await fetchWithDedupe('https://app.1lookup.io/api/v1/email', {
      method: 'POST',
      headers: {
        'Authorization': 'Bearer YOUR_API_KEY',
        'Content-Type': 'application/json'
      },
      body: JSON.stringify({ email })
    });
    
    const result = await response.json();
    
    // Process based on validation results
    if (result.data.classification.is_deliverable) {
      // Add to mailing list
      await addToMailingList(email);
    } else {
      // Flag for review
      await flagForReview(email, result.data);
    }
    
    res.json({ success: true, validation: result.data });
  } catch (error) {
    res.status(500).json({ error: error.message });
  }
});

import requests
from flask import Flask, request, jsonify

app = Flask(__name__)

@app.route('/webhook/validate-phone', methods=['POST'])
def validate_phone():
    data = request.get_json()
    phone_number = data.get('phone_number')
    
    # Call 1lookup API
    headers = {
        'Authorization': 'Bearer YOUR_API_KEY',
        'Content-Type': 'application/json'
    }
    
    response = requests.post(
        'https://app.1lookup.io/api/v1/phone',
        json={'phone_number': phone_number},
        headers=headers
    )
    
    result = response.json()
    
    # Check if phone is valid and not spam
    if result['data']['classification']['is_valid']:
        spam_check = requests.post(
            'https://app.1lookup.io/api/v1/phone-spam',
            json={'phone_number': phone_number},
            headers=headers
        ).json()
        
        if spam_check['data']['analysis']['spam_score'] < 50:
            # Safe to send SMS
            send_welcome_sms(phone_number)
    
    return jsonify({'success': True, 'data': result['data']})

<?php
// Webhook handler for IP validation
$input = json_decode(file_get_contents('php://input'), true);
$ip_address = $input['ip_address'];

// Configure API request
$ch = curl_init('https://app.1lookup.io/api/v1/ip');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, [
    'Authorization: Bearer YOUR_API_KEY',
    'Content-Type: application/json'
]);
curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode([
    'ip_address' => $ip_address
]));

$response = curl_exec($ch);
$result = json_decode($response, true);

// Check for VPN/Proxy
if ($result['data']['security']['is_vpn'] || 
    $result['data']['security']['is_proxy']) {
    // Block suspicious traffic
    logSuspiciousActivity($ip_address, $result['data']);
} else {
    // Allow normal traffic
    processNormalRequest($ip_address);
}

header('Content-Type: application/json');
echo json_encode(['success' => true, 'validated' => true]);