Yahoo is updating its Mail app across all platforms with a fresh design that includes syncing themes, a new compose experience, collapsible toolbar and better handling of threaded conversations. The new app is rolling out across the web, Android, iOS and Windows 8 devices beginning on Tuesday, with nearly complete feature parity between all versions. The update brings a radical new look to the inbox, largely due to the new themes which use either solid colors, provided images or content from Flickr. If the look of the themes feels familiar, it might be because you’ve seen Yahoo’s Apple Design Award-winning Weather app for iOS. The new appearance of Mail owes a lot to that app and, when you take it in aggregate, looks a lot like Apple’s iOS 7. There are lots of transparency effects going on here, on iOS 7 there is even some parallax effects that Jeff Bonforte, VP of Communications, says adds some readability and context.