When a new item is added to your inbox, Stacker sends out an email to your registered email address.
If you have the Android app installed you will receive a notification on your phone.
If you are using the Stacker web app the Inbox main menu will flash with a red colored border indicating a new item as been added.
If you have the browser extension installed the count will increment indicating a new item
If you have desktop notifications enabled , You'll see a pop-up when a new message arrives so you can keep track of incoming messages even when you're not looking at Stacker. These notifications are available for Google Chrome, Firefox, and Safari.