Email Verify API: Detect fake email addresses

$email = 'a9k4h3r@yopmail.com';

$apiUrl = 'https://api.apivoid.com/v2/email-verify';
$apiKey = 'your_api_key_here';

$ch = curl_init($apiUrl);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, ['Content-Type: application/json', 'X-API-Key: ' . $apiKey]);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode(['email' => $email]));
$response = curl_exec($ch);
$httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
curl_close($ch);

if ($httpCode === 200) {
    $responseData = json_decode($response, true);

    print_r($responseData);
    
    // Check if the email should be blocked
    // Is true when email is detected as invalid, suspicious, disposable, malicious
    if ($responseData['should_block'] ?? false) {
        echo "The email is invalid or suspicious and is blocked.";
        exit;
    }

    // Check if the email has a valid format
    if (!($responseData['valid_format'] ?? false)) {
        echo "The email format is not valid.";
        exit;
    }
    
    // Check if the email domain is disposable or suspicious
    if ($responseData['disposable'] ?? false || $responseData['suspicious_domain'] ?? false) {
        echo "Disposable and temporary emails are not allowed.";
        exit;
    }
    
    // Check if the email contains "dirty" words
    if ($responseData['dirty_words_username'] ?? false || $responseData['dirty_words_domain'] ?? false) {
        echo "The email contains dirty and not-allowed words.";
        exit;
    }
    
    // Check if the email username is suspicious
    if ($responseData['suspicious_username'] ?? false) {
        echo "The email username is suspicious.";
        exit;
    }
    
    // Check if the email TLD (i.e .com) is correct
    if (!($responseData['valid_tld'] ?? false)) {
        echo "The email domain TLD is not valid.";
        exit;
    }
    
    // Check if the email domain has MX records configured
    if (!($responseData['has_mx_records'] ?? false)) {
        echo "The email domain has no MX records.";
        exit;
    }
    
    // Check if the email TLD (i.e .top) is suspicious
    if ($responseData['risky_tld'] ?? false) {
        echo "The email domain TLD is suspicious.";
        exit;
    }
}