Sometimes a video is too much. For quick feature walkthroughs or step-by-step guides created in slides, a GIF is the perfect medium. It loops, it's silent, and it explains the concept instantly. Use GifDeck to turn your product walk-through slides into easy-to-digest assets.
Use GIF in your emails to make them more interesting and increase CTR. Many email clients give GIF an auto play functionality. Gmail supports it as inline playable format.