OEAPI Overview

Outlook Express & Windows Mail Addons development API

OEAPI Overview

OEAPI Overview

Outlook Express Application Programming Interface is the best Software Development Kit (SDK) to build your plugin in Outlook Express® and Windows Mail®. Nektra's services includes Windows Live Mail using our Windows Live Mail® API technology.

OEAPI enables your software to reach over 400 million users worlwide with Outlook Express® and Windows Mail® already installed.

Our customers have been using OEAPI for a wide range of applications:

  • Anti Spam & Anti Phishing
  • Automatic encryption of emails
  • Anti Virus
  • Integration with Web 2.0 sites
  • Customer Relationship Management (CRM) (i.e: Salesforce AppExchange, vTiger, SugarCRM)
  • Contacts synchronization & backup

OEAPI component has support for GUI customization, Messages management, MIME handling and many other useful features.

Take a look at the OEAPI Features that fit your needs.

OEAPI's Documentation

You can see a description of the ActiveX interfaces on the Product's Documentation.


  • Customize your GUI

    OEAPI enables you to extend Outlook Express & Windows Mail graphical user interface placing your own controls like:

    • Custom Toolbars.
    • Custom Buttons.
    • Custom Menu items.

    You can bind them to events in your application.

    oeapi toolbar sample  
  • Most programming languages

    You can develop your product using a wide range of languages supporting COM/ActiveX technologies.

    • Visual C++ (ATL/Comet)
    • .NET (C# / VB.NET)
    • Java
    • VB6, Perl/PHP/Ruby/Python

    Take advantage of the OEAPI versatility.

    oeapi toolbar sample  
  • Easy Messages Management

    Manage messages in MIME format through our useful interface that supports:

    • Attachments
    • MIME bodies handling
    • Modifying custom and standard
    • properties & headers(i.e: Subject, To, From)
    • Minimize the complexity of messages structures with OEAPI.

    You can start your Outlook Express / Windows Mail addon by Downloading OEAPI now!

    oeapi toolbar sample  

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