Add embedded content placeholder for email notifications
When you're notified of any message that has embedded content in it (video for example) it won't appear in the notification email itself. It will be stripped down from the message text. The only way to know it has any embedded content is to open the original message. This is sometimes confusing because we might not understand what the author is referencing to.
Instead the emails should have a placeholder that would tell you there's something missing here which can not be shown in an email. For example a 'media'
placeholder.