I recently installed Zimbra and have been finding this one rather annoying "feature" but:

In my main inbox, it shows me duplicates, one message thats in the inbox, and one message thats in a folder. Very annoying. It seems to only happen in conversation threads.

Second, messages which exist in folders, but don't display the above problem, when I mark something read in the Inbox, its not also mark read in the folder. These are in gmail accounts.

How could such simple things not be setup by default. What am I don't wrong here?