By David Baker

The other day, a friend sent an email saying she had declared email bankruptcy. With one mighty click and a mass email explanation, she accomplished the unthinkable: deleting all messages in order to begin anew at inbox zero.

The irony wasn’t lost on my overcrowded inbox, but when I received her message, the email marketer inside of me gulped. How many relevant offers — offers my friend actually wanted to engage with — had just been obliterated?…