If Show All Inboxes is enabled, users will see all Inboxes in the desktop client Inboxes Pane, whether they have View permissions to the Inbox or not. However, if they do not have View permissions, the Inbox will appear empty when selected.
- In the vertical Administration menu, select Inboxes.
- On the Inboxes toolbar, click the Show All Inboxes toggle switch.
The switch is green when all Inboxes are selected and white when they are not.