How to lock a full screen application in in a certain space?
This feature has been asked for by users many times, but unfortunately, Apple hasn’t implemented it yet.
A very ugly workaround is:
- Add a new desktop in Mission Control.
- Switch the Mail app to windowed mode.
- Open Mission Control, and move the window to the newly created Desktop.
- Switch to the Mail app. Right click on the icon in the Dock. In options, select “Assign to this Desktop.”
This is a very ugly workaround and you can use Mail only in Window mode this way.