Lost Mail Previews
It's embarrassing, but I did something in my Mail program in MacOS Catalina to lose the right column which shows a preview of the selected mail message. I can't find where to restore this. Please help. thanks.
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1) In the View menu, make sure that "Show Side Preview" is checked. If not, the preview area will be at the bottom instead of on the right side.
2) Move the cursor to the edge of the mail window, until it changes to something like this: <--|
Click and drag left. Nothing will seem to happen until you almost reach the middle of the window, and then... boom, there it is.
