try new mailboxcheck

zimbraAddressAvailable.php

@@ -12,6 +12,7 @@ require_once("api/Zm/Account.php");
 use WHMCS\Database\Capsule;
 
 $whmcs = App::self();
+$account_name = $_GET['name'] . "@" .  $_GET['domain'];
 $productID = $_GET['pid'];
 $accessData = array('zimbraServer' => '', 'adminUser' => '', 'adminPass' => '');
 $serverGroupIDObj = Capsule::table('tblproducts')