According to a recent Adage article, email marketing is expected to more than double in the next five years. How is that possible? I’m already getting enough email to choke a digital horse. Advertisers are projected to spend 2 billion dollars in e-mail marketing by 2014. The reason for the increase is that marketers have figured out that doing an email campaign is cheap, can be easily tracked and will report whether the campaign is working or not in an instant. It took them a while, didn’t it? Wouldn’t it be great if your mailbox could hold a finite amount of marketing mail? Just like in the real world, your mailbox is only so big. In some European countries I’ve even seen neighborhoods that had two mailboxes for each household”“one for mail, and one for marketing materials and newspapers. If someone were smart, they’d figure out how to deploy the same kind of two-mailbox system on the Interwebs and offer it to “target markets” so they could sort their mail without having to click delete a thousand times. Maybe I should do it. But who’s got the time? I’m too busy reading emails.