When you choose to embed a video into your press releases the preview thumbnail will show (YouTube, Vimeo any other source) in the press release in MusterPoint.
However, due to security reasons many email clients will not automatically preview video in emails.
To address this, when you add a video to a press release in MusterPoint, a link to the video will automatically be included which will click through to the original file. in a separate window.
We are unable to guarantee which email clients will or will not show thumbnail previews of video.
If you want to be guaranteed to show this, you can create a thumbnail image of the video and insert as a picture with a link through to the video.