Mark All In-App Notifications as Read
When the Notifications panel is full of items you've already reviewed, Mark all as read marks every visible notification as read at once and clears the panel — no need to do it one at a time. The panel then shows the empty state, indicating you're fully caught up.
Steps
Step 1: With at least one unread notification in the panel, click the Mark all as read button in the panel header. The button appears only when no individual items are selected.

Step 2: Every visible notification is marked as read at once, and the panel switches to its empty state.

When the Empty State Appears
The same empty state appears any time you have no unread notifications — whether your account hasn't received any qualifying event yet, or you've marked every notification as read. In both cases, the bell icon in the toolbar loses its red dot.
Notifications are kept, not deleted
Marking a notification as read does not delete it — the record is still stored on the server. You can still find notifications you've marked as read through the API by setting include_acknowledged=true.