Outlook LookOut!

Lookout is lightning-fast search for your e-mail, files, and desktop integrated with Microsoft Outlook™. Built on top of a powerful search engine, Lookout is the only personal search engine that can search all of your e-mail from directly within Outlook - in seconds...

I've been meaning to link to this program for some time. This Outlook plugin was made by a company recently purchased by Microsoft and is now given away through MSN Sandbox for free.

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