Yes. As long as you use a URL of a publicly hosted video that is hosted at Youtube or Vimeo, you can embed a video into the body content of an email using a video box element in the WYSIWYG (Bee Free).
In order to do so drag the 'Video' element on the right from the CONTENT box to the email body on the left. Once you input the URL, the box will be replaced by a preview and play button of the video you have linked.
As seen below:
