When you have ChooseFromOWA for Microsoft Exchange Server 2007/2010 you do not need to create an additional fake mailbox or contact specifically for storing an additional From address. The application is server-centric, so you do not need to install any extra software on the client side. The application leaves Exchange OWA files unchanged.
Full Specifications
What's new in version 1.0.0.1
General
ReleaseJune 29, 2011
Date AddedMay 25, 2011
Version1.0.0.1
Operating Systems
Operating SystemsWindows 2003, Windows 2000, Windows Vista, Windows, Windows 7, Windows XP