add the following to the page with universal email on it at line 1:
[php]<?php if (!session_id()) session_start(); ?>
if it is still not working, to line 2 add:
<?php var_dump($_SESSION); ?>
This will write the session contents to the page so you can see if the session is being set.
If the session is being set, send a copy of the page so I can look at the code.