When email messages have been actioned they are hidden from view in the Inbox, which means only the email messages still to be actioned are displayed.
In the ‘Inbox’ tab, click on the checkbox. All previously actioned email messages that have not been deleted will be re-displayed:
As email messages are received and replied to, they can be marked as “Actioned” by inserting a tick into the Status box at the beginning of the email as shown above.
Ticking the ‘Show Actioned Items’ will also display the email that have already been actioned.