A quick glance at the “Learn more” page on their web site revealed all I needed to know:
Xobni Insight is an add-on for Microsoft Outlook that offers effortless email management and provides instant access to the most important information in your email.
Useless crap in other words. (If you don’t know why, try doing an aptitude search outlook. That’s right, outlook doesn’t even exist.)
No, this is no new Google. Writing plug-ins for a MUA that only works on a game console won’t get you far.