Alan.
If you mean a user who has visited your web site and hence invoked the
servlet, then they surely don't necessarily HAVE an email address, do they ?
They could be sat in an internet Cafe somewhere.
Are you suggesting a set session properties from the user's machine would be
sent as part of the posy/get that would allow you to see their settings ?
Surely that would need a nosey applet at their end as well as jut as servlet
your end...
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