HTML-верстку подать в шаблон письма в виде переменной

$sostav.='<div class="obertka" style="float: left;background: #f2f2f2;padding: 10px; width: 95%; font-size: 14px; margin: 12px 0;"><a href="/request/otkliki-na-zayavki.php?ELEMENT_ID='.$arFields["ID"].'"><div class="obertka_all" style="float:left;width: 100%;font-size: 13px;"><div class="id_elem" style="float: left; margin-right: 55px; color: #000;">ID заявки '.$arFields["ID"].'</div><div class="id_elem" style="float: left; margin-right: 55px; color: #000;">'.$arFields["DATE_CREATE"].'</div><div class="id_elem" style="float: left; margin-right: 55px; color: #000;">Категория: '.$cat.'</div></div><div class="id_name" style="float: left; width: 100%;font-weight: bold;margin: 10px 0;color: #FF891B;">'.$arFields["NAME"].'</div></a></div>';
 $arEventFields= array(
            "EMAIL" => $mail,
            "NAME" => $name,
            "ITEMS" => $sostav 
         ); 
            echo "<pre>", print_r($arEventFields), "</pre>";    

         CEvent::Send("NEW_SUGGEST_SENDER_AGENT", SITE_ID, $arEventFields, "N", 106);