How to forward mail message using Zend Mail?

How do I forward Zend Mail Message using Zen开发者_StackOverflow社区d Mail?

I've found similar question with one answer, but this solution does not work (the body content is encoded)

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You will need to decode the body of the email message.

$content = $part->getContent();
        try {
            switch ($part->contentTransferEncoding) {
                case 'base64':
                    $content = base64_decode($content);
                    break;
                case 'quoted-printable':
                    $content = quoted_printable_decode($content);
                    break;
            }
        } catch(Zend_Mail_Exception $e) { } //content encoding header not set