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Abstract

Email has become a vital center for managing work, and has a growing role on mobile devices. However, the challenge of creating user interfaces to support the complex ways people manage their email are exacerbated by the limitations of mobile devices, notably in screen size and input mechanisms. We address this challenge by enhancing a PDAs inbox with user interface tools for viewing and navigating threaded email discussions, marking messages with gestural pop-up menus, and previewing content with one-line ticker-tape displays. Our paper describes these user interface contributions, the underlying implementation of our prototype, and reflects on reactions from prospective users.