Email - Videos (v4)
Video files are usually large and a video media server is the best way to host them. To include a video in an email message, add an image and create a link to the video on the hosting provider of your choice (e.g. Vimeo, YouTube, etc.).
Add a thumbnail image
In an empty block, click the menu button, choose "Add" and choose "Image". Drag an image file or click to select one.

Add a link
Click on the thumbnail image to select it. Then click the menu button and choose "Image". Add the video's location in the "Link" field and click the "Save" button.
