add_filter('fluentform/validate_input_item_input_email',function ($errorMessage,$field,$formData,$form){// 1. Change '12' to match your specific Fluent Form ID if ($form->id !=12){return $errorMessage}// Extract the email address from the form submission $fieldName=$field['name'];$email=isset($formData[$fieldName]) ? trim($formData[$fieldName]) :'';if (empty($email)){return $errorMessage}// 2. Replace with your actual EmailListVerify API Key $apiKey='5y6Za2Um2GRTCXV11zw899hpMlWZH4sy';$apiUrl='https://emaillistverify.com' . urlencode($apiKey) . '&email=' . urlencode($email);// Make a secure,non-blocking remote request to the API $response=wp_remote_get($apiUrl,array('timeout'=>3));if (is_wp_error($response)){return $errorMessage;// Safety fallback:Fail open if API is down}$result=trim(wp_remote_retrieve_body($response));// List of statuses that mean the email is fake or unsafe $invalidStatuses=array('fail','disposable','spam_traps','bad_syntax');if (in_array($result,$invalidStatuses)){return __('Please enter a valid, active email address.','fluentform')}return $errorMessage},10,4);