Sep 05, 2019 Open the Mail app; Click Mail and Preferences (from the menu bar) Click the General tab; And then deselect the “Prefer opening messages in split view when in full screen” box; And close the window; 6–Restart your Mac in Safe Mode. Here is how: Turn off your Mac; Turn on your Mac while pressing and holding the Shift key. My email list is large screen; My open mail screen has 3 panels; I cannot find an option or setting to go full-screen as hot-mail and every other mail program does. Please listen, 'First impression is ' I can't live with this 'I'm no new-user. I've been with Microsoft/MSN since their beinning.

Good afternoon Dan_Ho,

Welcome to the Apple Support Communities!

I understand you would like to change the behaviour of the Mail app opening in Split View on your MacBook Air. The resource below explains how to change the Preferences in Mail:

Note: When Mail is full screen, messages open in Split View by default.

If you want messages to slide up from the bottom of the screen instead, choose Mail > Preferences, click General,

then deselect “Prefer opening messages in split view when in full screen.”

Split Screen App For Pc

Take care.

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