I learned something today that I want to pass on. In Outlook, when you delete an email it is designed to go into the Trash folder. This is useful if you might want to retrieve that email later. To delete it from there permanently though you have to select Empty Folder.
But supposing you want to delete it immediately because there’s no way you ever want to see it again (e.g. spam), which is the case for many emails I receive. It’s surprisingly easy. Hold the shift key down when you hit the Delete key. Now it’s gone for good.
This way you avoid the tedious two-step process to completely remove an email from your system.