How to get email content to flex into display window with out scrolling?

I occasionally get emails from people that use Outlook or similar (I think it is an Outlook thing) and their messages seem to be set wider than the window I am looking at it on.
Not sure why this software (or Gmail or Gmail for Android) doesn’t “see” this problem and just flex the text around to wrap at the edge of the window.

This screenshot shows part of the email, the bottom right corner.
There is a wide image in the body of the email - could be that ( the box above the text is an image)
The text wraps somewhere out to the right of the image

I made the display window smaller, and you can see here there are now 3 lines instead of 2 in the paragraph below the image.
image

I took a look at the Plain Text version of the email, and it wraps perfectly well. So it is some formating in the HTML that needs overriding somehow I think.

So could EmClient come up with a way to override this?
I unfortunately cannot read the HTML in the .eml file I tried.

Cheers