Hello, Movable Ink co-founder here. You raise valid points, in that dynamic emails challenge users' perceptions of what is static and dynamic. It'll take some

Hello, Movable Ink co-founder here. You raise valid points, in that dynamic emails challenge users' perceptions of what is static and dynamic. It'll take some time to see what resonates well with users. I'm not aware of anyone else doing actual dynamic content and updates, but our product aims to make it very easy to build the dynamic email content using standard web technologies like HTML, CSS, and javascript. You can just create the dynamic web page, point Movable Ink at it, and whenever someone opens the email we'll load the web page and continually render it, sending down updates to your users' email clients.