A Bulletproof Guide to Using HTML5 and CSS3 in Email

When it comes to email, it’s all about providing your subscribers with a great experience. However, this doesn’t mean that your email has to look the same across every client—it just needs to be easily accessible for all of your subscribers. So, while HTML5 and CSS3 may not be supported everywhere, it doesn’t mean you shouldn’t use it. Use progressive enhancement and graceful degradation to ensure a positive email experience for all of your subscribers.