If you meant something like
$oldMail = new Zend_Mail_Storage_Imap();
$mail = new Zend_Mail($oldMail);
$mail->addTo($oneEmail);
$mail->send();
Then no, it's not possible. But you can always manually change the subject, add recipient's, and create an attachment from your old message:
//connect with imap
$oldMail = new Zend_Mail_Storage_Imap(array(
'host' => 'example.com',
'user' => 'test',
'password' => 'test'));
$newBody = $_POST['body']; //new body text
//If you want to download previous message
$messageNum = 8; //you have to know message number
$oldMessage = $mail->getMessage($messageNum); //in order to get it
$mail = new Zend_Mail();
$mail->addTo($oldMail->getEmail())
->setSubject('RE: ' . $message->subject)
->setBodyText($newBody);
//create an attachment
$attachment = $mail->createAttachment($message->getContent());
$attachment->type = 'text/plain';
$attachment->filename = 'RE.txt';
$message->addAttachment($attachment);
$mail->addTo($email);
$mail->send();
Additionally this may be helpful
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