Email can be overwhelming, but Canary mail offers a filtering feature that allows you to display only the types of messages you wish to view at that moment. Follow these steps to Filter Emails on your Windows Device. 1. At the top of the Thread List, click the Filter icon. 2. The Filter toolbar is shown below. You can opt to display only emails which are Unread, Unanswered, have Attachments, or are Starred. You can also filter emails according to Gmail categories to display only Personal, Social, Promotions, Updates, and Forums.