Categorizing is called Smart Views on Yahoo!Mail as it will help you look for specific sent and/or received messages. In comparison, the two other email services separate messages into tabs like Primary and Promotions. It sets itself apart from other webmail providers like Gmail and Outlook by grouping emails into categories such as Important, Read, Unread, Starred, People, Travel, and Social. Yahoo! Mail is an email service developed by Yahoo! and owned by Verizon Media.