How to change the Thunderbird layout
Configure the layout of the Folder pane, message list pane, and message pane according to your preference.
|In Classic view, the folder pane runs the entire height of the window.|
|In Wide view, the message pane spans across the width of both the folder pane and the message list pane.|
|In Vertical view, all three panes are side-by-side.|
How to change the layout
Click the menu button , open the menu, then go to and choose a layout.From the menu, go to and choose a layout.