i don't know what would be easiest because that depends on your knowledge base and, even if you know nothing about any adobe apps or issues related to your goal, that would be hard to answer.
but, i think, the easiest animation to do what you want would be an animated gif. you can check the adobe apps to see which can create animated gifs, but my guess is that adobe animate would be the easiest if you're starting with nothing (eg, no video to convert).
Owing to the limitations of email and social media platforms in general, the best you can do is attach an animated GIF or video. To make it interactive however, the platform that it is viewed on would need to support scripting actions. That's not possible unless you use a platform specific widget of some kind.
Adobe Spark is a good tool for creating Spark Pages (online newsletters), Spark Posts with animated Gif (for social media) or Spark Videos. See below.