Animated-GIFs in EDMs
The only possible way to include a pseudo-slideshow effect in an EDM is to use animated-GIFs. In addition, you can read more about Animated-GIFs here:-
However the issue with animated-GIFs is that you can only use a maximum of 256 colours and the images tend to be quite big so it would take a while to download. So we generally do not advise the use of animated-GIFs as a somewhat ugly workaround.