I stumbled upon Sanebox a few weeks ago and it has been a game changer for me. I am by no means a super power email user but I get my fair share of emails every week. I would spend a few hours a week archiving old and information only emails. One of the common problems was important emails would get pushed off the important front page of my gmail account. Getting pushed of the front page would push it from my mind and many important emails would get lost or delayed because it was out of sight out of mind.