This might be the wrong forum, but I'll ask anyway.
I set up Apple mail and don't like the display, compared to gmail (in Chrome/Safari).
I like the table layout where I don't see any specific email content until I select the specific email.
The closest I can come in Mac mail is this below, but it still shows each emails content.
I know I can slide the window up and down from dragging the dot in between, but that's not what I want.
Best Answer
No, Apple Mail has only classic layout on or off mode.
You can compensate it by turning off the classic layout, making the mail list super wide & use double click to open a mail window & close it with the shortcut.
Mojave: Mail → Preferences → Viewing → Use classic layout checkbox.
Catalina: Show the message list in column layout: Choose View > Use Column Layout (a tick indicates the layout is in use).
https://support.apple.com/en-in/guide/mail/mlhl7fa3a90d/13.0/mac/10.15
However, if you're looking for alternatives, Edison Mail's GUI is heavily influenced by Gmail's web version. (That was one of the reasons I deleted it.)