Smart Folders are one of the most underused features of macOS. Which is a shame, because they make it much easier to find files on your computer. They can save you a huge amount of time and change the way you use your Mac. But getting them set up properly takes a few steps. We’ll run through an entire Smart Folders tutorial for Mac users—but first, let’s talk about what Smart Folders really are. What Is a Smart Folder? Strangely enough, a Mac Smart Folder isn’t actually a folder.