Email - Including a video in your message
Videos can be a great way to communicate with your email subscribers. Unfortunately, many major email clients (including Outlook, Gmail, Windows Mail) will block any videos that you embed - because of the security risks. As a result, many email editors (including ours) don't support embedding video.
The best way to include a video in your email is to add an image, button or link and set the source parameter ("src") to the link that YouTube provides when you click the "Share" icon:
Many email designers create a still image from the video and add a "play" icon to the image, to provide a cue that it's a video.