Use Outlook Built-in Cleanup Tool for Desktop App There are several ways you can get this job done. Knowing how to mass delete emails on Outlook can make it quick and simple to clean up your mailbox so that your important messages don’t get lost in the clutter. How To Delete Multiple Email in Outlook Desktop Email Client With Clean Email, you can delete messages and perform other actions if you use the Outlook email service provider. 💡 NOTE: There is an Outlook email service provider (if your email address ends in or etc.) and an Outlook desktop client (you can connect it to any mail provider, including Outlook, Gmail, Yahoo, and more).
