code: private function clear() {
          if (!isset($this->phpMailer)) {
              return;
          }
          $this->phpMailer->clearAddresses();
          $this->phpMailer->clearCCs();
          $this->phpMailer->clearBCCs();
          $this->phpMailer->clearReplyTos();
          $this->phpMailer->clearAllRecipients();
          $this->phpMailer->clearAttachments();
          $this->phpMailer->clearCustomHeaders();
      }
docs: clears the current phpmailer