It sounds pretty useless.
The Mercury News has a summary piece here. Here’s how it works: You create an-email account at Boxbe, provide some basic information about yourself, and then you set a price marketers have to pay to contact you. The marketers earn the right, thereby, to have their email go to your other, regular email account. Boxbe takes a 25 percent cut. Thede Loder, Boxbe’s co-founder suggests you set the price somewhere between 15 and 25 cents per email. The idea is, if they have to pay you, marketers will stop spamming. But we don’t understand: Won’t they keep spamming your regular box anyway?