If only they could implement labels in the same way that ProtonMail and Gmail have! I want incoming emails to show in my inbox while being tagged with a certain

If only they could implement labels in the same way that ProtonMail and Gmail have! I want incoming emails to show in my inbox while being tagged with a certain label or category; this ins't possible in FastMail, only the ability to move the message to another folder entirely which raises the chance of missing messages altogether.