This article will teach you how to embed HTML5 video so that it can be played in email clients that support video in email, specifically Apple Mail, iOS 10 and the Samsung email client. It will also cover various fallback techniques so that alternate content is displayed in the clients that cannot play video.
As you can see from the table below, support for HTML5 video is still limited but the clients that do support it represent over half of the market share. Email applications, like the native iOS client, Apple Mail and the Samsung email client will allow recipients to play your video within the email client itself. Other clients like Gmail and the Android devices will display a fallback image.