Use the Inbox in Discuss app to monitor updates and progress on everything you do in Odoo. Notifications and messages from everything you follow or in which you are mentioned appear in your inbox.
You can keep an eye on your Inbox from any screen.
Marking an item with a check marks the message as read and removes it from your inbox. If you would like to save an item for future reference or action, mark it with a star to add it to the Starred box. You can star any message or notification in Discuss or any of the item-specific chatters throughout Odoo to keep tabs on it here.