i handle the overload a different way... i age everything out of my inbox one day at a time, each gets a label showing the remaining days; they start at 7 and count down. that way i only ever have 7 days of email to look at. it also makes it clear who the big offenders are... if 10% of the emails are some new marketing thing it's easy to see and unsubscribe. i do hate that there's still so much manual work involved though, i would love if marketers had to pay.