"If open source is to continue gaining ground with the corporate desktop, it must develop not just an outstanding e-mail client, but an all-out replacement for Outlook on Windows.
"Outlook is a security-hole wolf dressed in an e-mail client's sheep clothing. But many companies still won't, or can't, move from it because Outlook is also their group calendaring and address book application. In short, it's a core desktop application for them..."
