With the recent 7.0 release of MailChimp we’ve made some changes to the Templates and Campaign Builder sections. The traffic statistics of these two sections made it a particularly scary challenge for the product design team. Campaigns and Templates respectively are the third and fifth most trafficked areas of the app. It’s no surprise why. They’re the heart of MailChimp. Making changes to such critical parts of MailChimp while more than a million people are using it is like wrenching on a 747 while in flight. No pressure.