Good interactive site from Rackspace with their new email service MailGun, that’s more developer based. Lot’s-o SVG work, some subtle animation on the logo, some on-scroll work – but the cool thing is how they present their API in the interactive area in different programming languages, so you can test how MailGun works in a back-end environment. The site itself seems very simple – like the reference to old red / white / blue bordered air-mail envelopes. And “view source” get’s you….