I’m a bit overdue for updating my Load Images AppleScript for loading images in Apple Mail messages for the latest version of Apple’s operating system for Mac OS X, 10.10 or “Yosemite”. I actually had a version ready during the betas of Yosemite, but somewhere along the way the button text changed from “Load Images” to “Load Remote Content”. So I had to repeat the investigative work to extract all of the translated versions of the button text. In other words, <whine>localization is hard.</whine> Also, I was lazy / busy.
At any rate, you can find the latest version on the Load Images in Apple Mail project page.