Some design patterns improve your life on a daily basis. But do you even notice these patterns? Two-panel Selectors are used in nearly every email application and should therefore be very familiar to you. And their usefulness goes far beyond using email. It’s time to step back and revisit these with a designer’s eye. Here, we’ll take a look at when and how to implement them... and what to look out for when we do. We promise you this: you’ll never look at your inbox the same way again! The Design ProblemThere are many occasions where the user needs to see a list of options, categories, commands or other related items, but he or she still needs the list in view in order to make a selection. T...