echo addHidden('session', $session).
addHidden('subject', $subject).
addHidden('send_to', $send_to).
addHidden('send_to_bcc', $send_to_bcc).
addHidden('send_to_cc', $send_to_cc).
echo addHidden('session', $session).
addHidden('subject', $subject).
addHidden('send_to', $send_to).
addHidden('send_to_bcc', $send_to_bcc).
addHidden('send_to_cc', $send_to_cc).