Make email preview pane display fit in window

Make email preview pane display fit in window.

Is there any way to make the display in the preview pane smaller? I want to be able to read my emails in the preview pane.

The huge size of the preview pane display chops off the right side of the message. The characters are 1/4 inch (6 mm) tall.

You might have zoomed in at some stage.

Ctrl + 0 to reset to normal. With mouse hovering over preview, use Ctrl + mouse scroll to zoom in and out.

Bingo !!! Thanks for all your help.