GTD and Google Tools – [David Allen & Co.] ….then a label for each current project. When processing mail, if something is actionable or waiting, it gets either the @Action or @Waiting label as well as the Project label if it’s related to a current project. Every email gets archived after it gets labeled to maintain zero in the Inbox (because it takes less effort to work from a place of zero in the Inbox than to keep anything in the Inbox as your only reminder.) For non-actionable stuff that needs to be saved, it simply gets archived.