One of the most exciting parts of online development in recent years has been a substantially higher level of consistency in web browser support for new HTML, C

One of the most exciting parts of online development in recent years has been a substantially higher level of consistency in web browser support for new HTML, CSS, and ECMAScript (JavaScript) standards. Despite the addition of new capabilities such as media queries, flex, rem units, and more, the same cannot be said for email clients. Where do you find innovations in emails?