Google today released a amendment a feature for those who wish to reduce the number of emails they receive. In short, the gmail will provide a link Unsubscribe at the top of some emails next to the sender's address.
The feature it won't appear in all messages. Of course, it will only work on those that have the Unsubscribe link, and Google also points out that this feature will depend on Gmail's new default filters: emails found promotions, inbound from Social Forums or tabs.
