Gmail helps you get rid off unwanted email by clicking "Report Spam" button; Now, when you report spam on a legitimate newsletter or mailing list, Goolge'll help you unsubscribe mailing lists and newsletters you subscribed to a while back but no longer want to receive, with just a single click. After clicking report spam, you'll see a little dialog box (see pic). Clicking "Unsubscribe" will automatically send a request back to the sender so they'll stop emailing you. Note: If you want to unsubscribe without reporting the message as spam, click "show details" in the top-right corner of the message, then click "Unsubscribe from this sender."