Well, I see in the earlier 'Hiding Products' discussion how to set folder properties. But that makes me wonder... What happens when two people hit my page at the same time? Each enters their data, including an email, and reach the response page at about the same time. The contents of the pages are uniquely rendered, but surely their interactions with folder properties could cause some weird overlap, like this: A requests the page. B requests the page. Zope starts processing A's page. Zope sets the folder attribute based on A's email address Zope starts processing B's page. Zope sets the folder attribute based on B's email address Zope sends mail for A to current folder address - which is B's address. Zope sends mail for B to current folder address - which is B's address. A gets no response. B gets two responses. This won't do. I really need to be able to send mail using only the received variable, and no folder properties; at least no dynamic ones. Please help.