Wow, thanks! And a few more questions. Can I use Zimbra MySQL database for my own activities? For instance, I want to log some user actions. Can I create table in existing database by hands and insert records there from my JSP page through JDBC? Maybe there is some other way, more standard and clear, through some Zimbra interfaces? If so, please give me the right way to dig in, and some great code examples And second question is - I have installed Zimbra v6.<bla-bla> (don't remember now), and in the other company I saw Zimbra v6.<another bla-bla>. I have created shared folder in 'admin' account for 'admin2' account. Now I am logging in as admin2 and try to set tag on message in admin's shared folder - I see tag menu is disabled. And in the other company this menu is enabled for user 'admin2' an admin's shared folder. Privileges on shared folder are set to highest ('Administrator') at my Zimbra. Is it some thing related to different versions? Or this feature is customized at admin control panel and I don't know how? if second, please tell me how can I do it? Many thanks!