Josh Rosenwald, Unroll.Me's founder, recently spoke to Danny Schreiber of Zapier about Unroll.Me's growth. Here's a piece the Zapier blog:
What's the brief story behind Unroll.Me? How did it come about?
Me and my buddy were trying to start a company and we both were trying to come up with ideas. As we emailed back and forth and noticed our inboxes full of all this crap, we figured the first thing we should build was something that helped us clean out our inboxes, not intending this to be a company, just a short project to get on the same team and help people out. But it had a lot of early adoption and we decided to go with it and see what happens.