public function setReply($email, $title=null) {
		$this->set('Reply-To', $this->buildMail($email,$title));
	}
public function setReply($email, $title=null) {
		$this->set('Reply-To', $this->buildMail($email,$title));
	}
set reply-to field respected by most email clients
@param $email
@param null $title