I am looking to change the Delete command in the OS X Mail app (in Yosemite) such that when I click delete my messages are archives as opposed to placed to the trash. I have spent some time googling around trying to find a way to change this in the Mail app settings but have had no success. My next idea what to add a custom keyboard shortcut but I am unable to add a shortcut which uses the delete key. 1. Is this possible? 2. Does anyone know a way to archive message as opposed to sending them to the trash? Thanks.