Mail on Mac OS10.3.5

[shoreditchjo]

I expect this is obvious but somehow I have ruined my mail setup so that I no longer have the facility to view the messages without opening them. Instead I now simply have a page-long list of messages in my inbox and no split screen. Can anyone tell me how to get it to revert to the default view please.

[yellow]

Sure...

Look at the bottom of the Mail.app window. There's a very small icon of a circle/dot/button in the center. Mouse over that and you will see your cursor become vertical arrows divided by a horizontal line. Drag up, and your preview window is back.

[shoreditchjo]

You are the best thank you so much.