The Mailbox Cleanup tool is a built-in cleanup tool on MS Outlook that completely clears unwanted files and emails. Note: By applying these steps, all emails and other previously deleted files will be completely removed from your Outlook mailbox. However, you can delete these emails to clean your mailbox since you no longer need them. Although they are not in your inbox, they still retain space in your mailbox until after 30 days. 5 Steps total Step 1: Delete Trash Mailsĭeleted emails are moved to the trash folder. Without further ado, let’s show you simple tips and tricks for cleaning up your Outlook Mailbox. Nevertheless, if your Outlook mailbox is cluttered, there is one thing you can do – clean it up. Not to mention, excess Outlook cache can also slow down your mailbox and cause several issues. This can be not very nice primarily if you use your Outlook Mailbox for business purposes. A cluttered inbox makes it difficult for you to identify important emails quickly.Īlso, you might miss essential emails when you receive them. It is essential to keep your Outlook Mailbox clean. Is your Outlook Mailbox cluttered? Or do you experience Outlook Mailbox issues foe to excess cache or overused storage space? We’ve got you covered.