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One of the new features that macOS High Sierra brings with it is the option to use Split View (a split screen) within Apple Mail when writing a message. Unfortunately, exactly this did not work for one of my readers, which is why he asked me if it was just not possible with him.
To my surprise, it didn't work for me either. I have to admit that I rarely run apps in split view, as I simply distribute the windows on my monitor by hand, which is the faster solution for me on a large desktop.
In order not to go wrong, I will read again how Split View actually works in Mail. The instructions are quite simple and clear:
If Mail is open, click with the mouse pointer on the top left on the green circle with which you normally click the App sends in full screen. If you keep the button pressed longer, however, one side (left or right) of the desktop will turn slightly blue and you can see where the window would open in split view.
This is the "old" split view function that was also available in older macOS versions. What is new, however, is the function with which you can answer an email in Apple Mail and Apple Mail automatically creates a split screen with the normal view on the left, while the window with the new email is on the right.
It usually works like this: You briefly click on the green button in the top left corner of the Apple Mail window and this sends the mail program to full-screen mode. If you click on the "New E-Mail" button or click on answer for an e-mail, the mail window is reduced and you have an overview of the mails and the mail you have selected on the left and the new mail that you have selected on the right one is currently writing. This is particularly useful on MacBooks when you want to keep an eye on the other mail while you are writing.
Exactly this function did not work for my reader and me. Mail went to full screen, but when I started a new mail, this window opened in the middle of the old mail.
After a bit of googling and pondering, I found the reason: We seem to have both deactivated an option in the Mission Control settings that prevents the split view.
To activate it, go to “Mission Control” under system settings and activate the “Monitors use different spaces” option.
Now you have to log out of macOS with your user again and log in again and from then on the split view display in Apple Mail should no longer be a problem. In any case, it worked for me right away. :)
Jens has been running the blog since 2012. He appears as Sir Apfelot for his readers and helps them with problems of a technical nature. In his free time he drives electric unicycles, takes photos (preferably with his iPhone, of course), climbs around in the Hessian mountains or hikes with the family. His articles deal with Apple products, news from the world of drones or solutions for current bugs.