Inbox is a roll-up of notifications across all of your teams and projects. It is designed to help you triage unread notifications quickly and easily.
After opening your Inbox, you'll see a 'filter toggle' above your list of notifications. This toggle lets you switch between two ways of viewing all of your notifications in one place.
When the filter toggle is uncolored, you're seeing your most recent messages. When the filter toggle is colored, you're seeing only unread messages.
To clear a red dot in Inbox, simply click it on a desktop computer or swipe left on a phone. If you'd like to mark a notification as unread, simply click the empty circle to restore the unread status.
You can mark all messages as read by clicking the 3-dot menu above your list of inbox notifications.