It allows you to embed your .NET and VCL forms into Outlook custom forms and Outlook folder views. You can use any feature-rich .NET forms, controls and components (such as grids, editors and tree-views) and embed them into the Outlook Explorer and Outlook Inspector windows like form regions provided by Outlook 2007. It supports Outlook 2007, 2003, 2002 (XP) and 2000 with or without any service packs. Read more on http://www.add-in-express.com/
Free download