By default, the Unread filter may still show emails you've since read. To make sure only truly unread emails appear:
Go to Settings | Global Settings | Advanced Features and enable Hide Read Emails from Unread Filter.
By default, the Unread filter may still show emails you've since read. To make sure only truly unread emails appear:
Go to Settings | Global Settings | Advanced Features and enable Hide Read Emails from Unread Filter.