How do I get embedded graphics to open inside the message?

I’m new to eMail Client. My old software automatically opened embedded graphics inside the message where the sender placed them. This software merely shows them as one, or more, attachments listed above the message. I’ve discovered how to open them in another program but how do I setup my preferences to get them to open automatically when I open the message?

It should work without any problems - send me the problematic email saved as .eml at so we can analyze it.