gmail-organize

gmail label list | create <name> | delete <name>
gmail modify <id...> [--add L] [--remove L] [--action archive|read|star|...]
                     [--trash] [--untrash] [--thread] [--create] [--dry-run]

--json gives the Envelope. modify takes many ids at once.

Gmail has no folders

Everything is a label, including the states that look like something else. modify exposes the readable verb and performs the underlying edit: