8
You're right, notification messages go only to admin users that you specify when you create the form, at least that's how it works in Formulaire I believe.
Formulize has no e-mail notification right now.
But we are working on several notification options and there is a detailed discussion of how an advanced user could create such functionality right now using Formulize plus Pageworks:
http://dev.xoops.org/modules/xfmod/forum/forum.php?thread_id=1772&forum_id=745
Good luck,
--Julian