Visual Studio 2026

This technology is now available for our custom development services only. Based on the Add-in Express for Office core, it is designed for building custom-tailored Office add-ins with far less coding than you usually have to do. Plus, it includes all Add-in Express features such as True RAD, visual designers, Outlook view and form regions, etc.

Extensions: VSTO-based application-level Office add-ins
Applications: Outlook, Excel, Word, PowerPoint, Visio, InfoPath
Office versions: 2003, 2007, 2010 (x86 and x64)
IDE: VSTO 2005 SE, 2008, 2010; VB.NET, C#

Overview Outlook-specific features

This technology is now available for our custom development services only. This visual toolkit allows creating secure, managed, isolated, deployable and version-neutral plug-ins for Outlook Express and Windows Mail. It provides powerful solution templates, Outlook Express - specific components, visual designers and wizards for advanced customization of Outlook Express menus, toolbars, panes and regions.

Extensions: Outlook Express plug-ins
Versions: Outlook Express 6.x, Windows Mail 6.x
IDE: VS 2005, 2008; VB.NET, C#, C++/CLI

Overview Getting started

The innovative technology for customizing Outlook views and forms. It is included in all Add-in Express for Office products and can be used to extend Outlook views, e-mail, task and appointment windows, To-Do bar, Reading and Navigation panes with your own custom sub-panes.

Extensions: application-level Outlook add-ins
Outlook versions: 2000, 2002, 2003, 2007, 2010 (x86 and x64)
.NET Edition: VS 2005, 2008, 2010; VB.NET, C#, C++/CLI
.NET Framework: 2.0 and higher
VCL Edition: Delphi 5 - XE

Outlook regions in .NET Outlook regions in Delphi