Information in general, and particularly emails, are in abundance. Too much of a good thing may still be, well, just too much. TypeApp Filters allow you to zoom in and narrow down your view to the exact emails you are looking for or need to handle right now.
You can filter through your main list. In addition, when looking at a cluster or at any other list in TypeApp, you have the ability to fine tune it and view only the emails that are relevant to you.