Mail Box Clean Up
Organizing also implies cleaning up. It's one thing
to manage where you put the Data Files. You should also consider how
much needs to be stored. Do you need to keep everything in the
Deleted Items?
Review the Mailbox Cleanup
Go to Tools-> Mailbox Cleanup.
What Do You See?
You can View the Mailbox size.
Find items older than 90 days.
You can also indicate that Emptying the Deleted
Items is permanent.