Instead of constantly clicking the garbage can icon, I have recently discovered Unroll.me. Within minutes your inbox is clear of all subscriptions that you wish to no longer receive! Here's how it works:
1. Go to Unroll.me
2. Get started by typing in your email address and password.
3. Sit back, relax, and watch as this website takes a trip through your inbox!
4. Once complete, it will give you the option to read through the subscriptions and give you a final say as if you want to "toss the junk" or keep certain ones.
Pretty neat, eh?
P.S. Do you have a handy website that you recommend?