macOS Client minimized startup

I try to start the macOS emClient on startup, but it will not minimize, after executing the following command after login open -j -a “eM Client”. The app will start but after starting it will not minimize. The -j option should minimize the app after it is started. It works with macOS apps. Is there an other way to start it minimized, without purchasing a third party app or can it be added to the emClient as a feature?