Suppose you receive weekly email newsletters titled "Math Round-up" from the school math department. You have already created labels for "Math Department" and for "School Newsletters" which you use for these newsletters. These are not particularly important emails that need to appear in your inbox so you would like them to be Archived as they are recieved so that they will skip the inbox, but to be available every time you click on the "Math department" or "School newsletters" labels. Apps mail can do this automatically with a custom filter.
You set-up a filter that detects the common subject "Math Round-up," and specify that you want to have the "Math department" and "School newsletters" labels applied to these messages, and to Archive the messages so they don't appear in the inbox view. After you set-up the filter, every week when the "Math Round-up" newsletter is sent, it goes directly to your "Math department" and "School newsletter" labels without going to your inbox first. After 2 weeks, you check your "Math department" label and see 2 "Math Round-up" newsletters unread within the label.
Reference Store and organize mail