/**
  * Save file to spool path
  *
  * @param \Shockwavemk\Mail\Base\Model\Mail $mail
  * @return $this
  * @throws \Magento\Framework\Exception\MailException
  * @throws \Magento\Framework\Exception\FileSystemException
  * @throws \Exception
  */
 public function saveMessage($mail)
 {
     // convert message to html
     $messageHtml = quoted_printable_decode($mail->getMessage()->getBodyHtml(true));
     $this->createFolder($this->getMailFolderPathById($mail->getId()));
     // try to store message to filesystem
     $this->storeFile($messageHtml, $this->getMailFolderPathById($mail->getId()) . DIRECTORY_SEPARATOR . self::MESSAGE_HTML_FILE_NAME);
     // convert message to json
     $messageJson = json_encode($mail->getMessage());
     // try to store message to filesystem
     $this->storeFile($messageJson, $this->getMailFolderPathById($mail->getId()) . DIRECTORY_SEPARATOR . self::MESSAGE_FILE_NAME);
     return $this;
 }