The only App I can set opening in the full window is Apple's Mail App - it can be set in the App setting. I suppose other application could be set via terminal commands, but I'm not that handy with terminal commands to do so.

1 Answer 1


Yes you can open any app in full window

Use keyboard shortcut

Command + Control + F

Same to exit full window as well

  • Sure, but I want the App to open in the full window by default without using any commands.
    – Josh E.
    May 6, 2020 at 5:57

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