How I Built This with Guy Raz

Mailchimp: Ben Chestnut

In the late 1990s, Ben Chestnut was a struggling young designer interning at an appliance company, when somebody suggested that he try designing for the internet instead. A few years later, Ben and two co-founders launched a web design agency, only to discover that the service they'd included almost as an afterthought—email marketing—was taking off among…