Hi Joseph,
When you visualize an email in Outlook (or other client), if there are images in the email , Outlook will block the images from displaying to protect your PC. You need to press Download Images and then you'll be able to see them.
This means that Outlook is downloading the images to your local machine.
After this It's natural for the images not to display in your CRM if you do Ctrl+A -> Ctrl+C in Outlook and then Ctrl+V in the Mail Template Creation Form in the CRM. Because the picture is located in the Outlook archive in your PC and not accessible by the CRM.
I hope I was clear enough.
That's why you have to copy from a real Web Page on a real Web Server (Not a local web Server).
FYI: The HTML based Emails can be displayed differently in different email clients depending of the HTML engine used by the Email client. That's why I prefere using screenshots of the entire Emails (except the hyperlinks ofcourse).
This guaranties that the font, pictures and spaces will not change when the mail is open in any email client.
Regards,