(From unroll.me's copy on their front page) Instantly see a list of all your subscription emails. Unsubscribe easily from whatever you don’t want. Unroll.Me i

(From unroll.me's copy on their front page) Instantly see a list of all your subscription emails. Unsubscribe easily from whatever you don’t want. Unroll.Me is a free service So they analyse an inbox, and siphon the data in the process.