Free web app OtherInbox wants to do the job you loathe doing daily — looking through all those semi-regular news alerts, coupons, account updates and other non-personal mail. Give it the keys to your inbox, and OtherInbox can summarise and prioritise your bacn.
We first peeked at OtherInbox when it was an up-and-coming product, and now it's available for anyone with a Gmail or Yahoo Mail account to plug into. Once you authorise OtherInbox through your account, the service starts looking through the emails you get on a regular basis that aren't from individuals, then categorises and makes sense of them all.
OtherInbox was pretty smart at knowing what was peripheral mail when it peeked through my personal Gmail. Which makes sense, as it's got the data from hundreds or thousands of other OtherInbox accounts to know how web apps, flight points trackers and the New York Times news alerts work. OtherInbox created a new label in my Gmail, "OIB", which collected all that secondary mail — you could hide that label if you'd like in your Settings. When OIB catches new stuff, it can email you to alert you, and you can choose to have OIB send you a summary email of all your new bacn as often as you'd like, similar to Nutshell Mail.
"But what about Gmail's fancy new Priority Inbox," you're likely thinking? "Isn't that supposed to take care of this?" Yes and no. Priority Inbox does separate out your actual you-should-know mail and Starred messages, but you've still got the lower-half inbox to occasionally deal with. OtherInbox itself states that it works just fine alongside Priority Inbox and makes a convincing argument.
OtherInbox is a free web app and requires a Gmail or Yahoo Mail account to use.