Large Image Embedded In Email Message Does Not Display Well

I just started using the latest version of eM on a Windows 7 PC.  Most of my messages are sent from my iPhone X and I often include images in the message body.  Sometimes the iPhone gives me the option to choose what size to send the image in.  But when it does not, it sends the image in the original size which from the iPhone is quite large. Unfortunately, this image overwhelms the reader pane of the eM client and makes it impossible to view the entire image, and it turns a landscape-oriented image on it’s side.  I cannot find a way to get the eM client to display the image properly and would appreciate some guidance in this area.
Thank you in advance.