What I like is to add a feature that first time users are presented with the identity screen to they can properly set their name/email etc.
I have a patch that does this that needs some testing. I posted about it in this thread: http://roundcubeforum.net/forum/index.php?topic=1135.0
I made the patch against an SVN revision, but it may work against the beta. I am not 100% sure, but if not you may be able to look at the changes made and adapt the code to suit your needs.