It's been a good couple of years, I am a satisfied user of the service Unroll.Me. This is a great way to fight spam in emails by unsubscribing from what you don't want to receive and / or combining subscriptions (whether from stores, newsletters, etc.).
Because he just won an app for iOS!
Through the application, which runs on iPhones / iPods touch, you can classify new emails detected by Unroll.Me, configure your Rollup, manage subscriptions, and more.
Unroll.Me even supports multiple accounts and is currently compatible with Gmail, Google Apps, Yahoo! Mail, AOL, iCloud and Outlook basically all great.