From Outlook.com, you can use Skype Web Control to send messages and make voice or video calls — just sign in and select the Skype button to get started. Learn more about How to use Skype Web Control from Outlook.com. Open Gmail. In the search pan start typing label:unread. After you type label: you will have some options. More on that later. After you select label:unread it will search your entire account and find ALL unread messages.