<?php
/**
*
* This hook sends out the 'Client Signup Email'
* template when 'Email Verification' is enabled.
*
* @package     WHMCS
* @author      WHMCS Nathan
* @copyright   Copyright (c) WHMCS Limited 2005-2017
* @license     https://www.whmcs.com/license WHMCS Eula
* @link        https://www.whmcs.com/
*
*/

if (!defined('WHMCS')) {
     die('This hook should not be run directly');
}

use WHMCS\Config\Setting;

function sendSignupMail($userId){
    $postData = [];
    $postData = [
        'messagename' => 'Client Signup Email',
        'id' => $userId,
        ];
    $results = localAPI('SendEmail', $postData, 0);
}

add_hook('ClientAdd', 1, function($vars){
    $emailVerificationStatus = Setting::getValue('EnableEmailVerification');
    if($emailVerificationStatus){
        sendSignupMail($vars['userid']);
    }
});