Fabrizio Capobianco wrote on his Blog, Mobile Open Source, 2 days ago this article-
1&1, the largest web hoster in the world, went live with a mobile email solution last week in Germany. They are using Funambol, integrated with OpenXchange. Open source on all levels...
Fabrizio is one of my "heroes", so I invite also you to follow him on Blog- it worth your attention, guys!
http://www.funambol.com/blog/capo/
About Funambol:
Funambol is the Mobile Open Source company. It is the company behind the largest open source project in wireless, with over a million downloads. The vision of Funambol is bringing mobile data to the masses. In a nutshell, provide BlackBerry-like functionalities to everyday phones. Yep, that's push email on your RAZR, coming from your Google or Yahoo or whatever consumer account, including your address book and calendar synchronization among all your devices. We support 1.5B phones, plus Outlook, your iPod and so on...
Keywords: Fabrizio Capobianco, Mobile Open Source, Mobile Web, Open Source, Funambol