Build Outlook Express and Windows Mail add-in
in Visual Studio .NET - VB.NET, C#, C++ and Chrome

Add-in Express™
for Outlook® Express and Microsoft® .net

No ad claims - facts only!

Having a quick look at the marketplace of development components and tools you will find lots of competitive vendors claiming that their products are the best. Of course, you may think that Add-in Express is no different. But before you dismiss our claims, take a minute to review the facts below and see for yourself why Add-in Express for Outlook Express has no equal competitors on the market. Of course, you may get tired of reading this rather long list. In this case pay attention to Fact #ZERO only. This Fact will tell you the reason why Add-in Express was created and what it is being developed for.

Fact #1: Outlook Express 6 and Windows Mail are transparently supported

  • you can develop version-neutral plug-ins

The Add-in Express programming model, its run-time code and all Outlook Express-related components are version-neutral and work on Outlook Express 6 and Windows Mail transparently.

Fact #2: Low-cost and free IDEs

  • you stick with the IDE you like

Add-in Express completely supports VB.NET, C#, C++, Chrome and all commercial editions of Visual Studio including the low-cost Standard and Professional editions.

Fact #3: Outlook Express GUI is customizable

  • you use designers instead of coding

Special toolbar and menu components provide the easiest and most flexible way to create your custom controls on new toolbars and existing menu bars. So, you develop the Outlook Express add-ins GUI more quickly than ever before. Forget Windows API and COM, tune ready-to-use components.

Fact #4: Unified Outlook Express Objects

  • you use Outlook-like programming model

Add-in Express delivers a powerful set of Outlook Express objects that allow you to access Outlook Express objects and handle their events. No COM, no Windows API, no MAPI! You use customary objects and events such as Application, Folder and Folders, MailItem and Items, Explorer and Explorers, Inspector and Inspectors, Attachment and Attachments, FolderAdd and FolderRemove, SelectionChange and FolderSwitch, ItemAdd, ItemChange and ItemRemove, etc. You use all of them for the "main" Outlook.

Fact #5: Isolation and managed world over Office

  • don't worry, it is done automatically

The add-in loader is used automatically when you create new OE solutions. It isolates your solution into a separate AppDomain. Forget about shims, loaders and isolation, all this is done automatically.

Fact #6: Manifests - the newest DLL hell

  • don't worry, it is done automatically

Add-in Express provides a universal manifest that supports .NET Framework 1.1 and 2.0. So, you can develop and debug your solution in Visual Studio 2003 and 2005 without any troubles.

Fact #7: Real experience in Outlook Express development

  • you avoid tons of coding and testing

More than 60% of Add-in Express source code has been developed to overpass all pitfalls and features of different Outlook Express versions and updates. Add-in Express is tested on all of them with and without updates. With Add-in Express you get our long-term practical experience in Outlook Express development.

Fact #8: Version-neutral, secure, isolated, managed, deployable and updatable Outlook Express extensions

  • you avoid tons of coding and testing

For the first time, with Add-in Express you make your Outlook Express solutions version-neutral, secure, isolated, managed, deployable and updatable.


Add-in Express is a time-saving toolkit, and its chief goal is to let you concentrate on your main work instead of coding things that have already been coded many times by many people. You write your applied code only, Add-in Express implements everything else.