Email is one of the most used marketing methods but with many technical limitations of which one is that you cannot really add movies to an email that starts playing within your email which then also works in all browsers.

You can, however, mimick adding a video to your email!

The trick is to create an image (or screenshot) of that movie, preferably with a play icon in the middle and add that image with a link to the movie on Youtube or Vimeo to your email!