I believe there is a time and place to use CSS animations and animated GIFs, but it may seem confusing at first. Let’s weigh up the pros and cons of using each type of animation.
+ Easy to create if you have the know-how
+ Show off products in restricted space
+ Good support across major email clients
– Outlook 2007/2010/2013/2016 will only show the first frame of the animation
– File size can be slow to load and eat into a subscriber’s data plan if viewed on a mobile
+ Lightweight and fast to load
+ Animations are much smoother compared to other methods of animating
+ Looks very good on high quality mobile screens
– Knowledge required on how to create and troubleshoot
– Limited client support
And that’s the big problem with animated GIFs: not useful when hitting Outlook clients.