* @param string $rfc822 The rfc822 mime message
* @param boolean $forward Indicates if this is a forwarded message
* @param boolean $reply Indicates if this is a reply
+ * @param boolean $parent Parent message in thread.
*
* @return boolean
*/
- public function sendMail($rfc822, $forward = false, $reply = false)
+ public function sendMail($rfc822, $forward = false, $reply = false, $parent = false)
{
$headers = Horde_Mime_Headers::parseHeaders($rfc822);
$part = Horde_Mime_Part::parseMessage($rfc822);