Mobile users struggling with managing large amounts of e-mail in the GMail inbox can now set up and utilize Priority Inbox, a service that automatically identifies important mail based on what users actually read and reply to (which Google keeps track of). Up until now, only desktop users and a handful of Android devices could use the service, but it is now available for almost all HTML5-compliant mobile web browsers, such as devices on Android 1.5 or higher or iOS 3 or higher.