In Yosemite, when you archive a message in mail, an "Archive" mailbox shows up in the left hand pane.. This, to me, confirms this is locally done, not server side, since it would always appear otherwise. However, once shown, u cannot get rid of it... I tried removing the "archive.mbox" in the Mail folder, but it re-create is again when launching the app... How can prevent this ? or must i not archive mail ever ? I don't really mind it, its just there is no messages in there... and would prefer to get rid of it.