Gmail mailing-list cleanup with a real leave action

Mailing lists are different from one-off senders. InboxMint’s Unsubscribe page is built around lists Gmail can actually leave, using the same unsubscribe machinery Gmail already understands — handled on the server, not pasted into your browser.

You still confirm every leave. You can Keep a list in Primary or file it into a folder if the mail is useful but noisy. Optional future trash is off unless you turn it on. That keeps list cleanup honest: leave, file, or keep — not a fake “clean all lists” switch.