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Convert OST to HTML via C#

OST to HTML C# conversion using .NET API without Outlook® or Thunderbird® dependencies.

How to Convert OST to HTML Using C#

If you are a software developer looking for a solution to convert your email files for efficient processing, Aspose.Email for .NET will become your reliable assistant. This robust and progressive C# library is designed to optimize your email processes and enhance email management systems within the .NET environment.

With a focus on efficiency and ease of use, this API offers a seamless approach to handling email-related tasks, making it an ideal choice for developers working on intricate email management systems or looking to integrate email functionalities into existing .NET applications. Enhance your software solutions with advanced email processing features!

One of the standout features of the API is its ability to efficiently convert between various email formats enhancing the flexibility and customization of applications. With just a few lines of code, developers can easily export items from an OST file to HTML, ensuring data integrity and workflow continuity during the migration process. Exporting from OST to HTML enables the viewing and access of Outlook email data in a web-based format. This process allows for the preservation of the original email content and structure while making it accessible across different platforms and devices, enhancing the usability and portability of the email data. The API’s user-friendly interface and high-speed performance makes the conversion process straightforward and easy involving just a few steps to load, read and save messages to the required file format.

Additionally, the API provides comprehensive support for a wide range of email formats and storage systems, allowing you to create, read, and manipulate email messages and interact with various email protocols. To leverage the power of the .NET API, perform one of the following actions:

  • Open NuGet package manager, search for Aspose.Email and install it on your device.

  • Use the following command from the Package Manager Console:


PM> Install-Package Aspose.Email

Steps to Convert OST to HTML via C#

.NET programmers can easily load & convert OST files to HTML in just a few lines of code.

  1. Open a personal storage file (“storage.ost”).
  2. Create the output directory if it does not exist.
  3. Get the “Inbox” subfolder from the root folder of the personal storage.
  4. Iterate through each email message in the inbox.
  5. Save each message as a .html file.

System Requirements

Before running the .NET conversion code, make sure that you have the following prerequisites.

  • Microsoft Windows or a compatible OS with .NET Framework, .NET Core, and PHP, VBScript, Delphi, C++ via COM Interop.
  • Development environment like Microsoft Visual Studio.
  • Aspose.Email for .NET DLL referenced in your project.
  • Include namespace in relevant class.
 

This sample code shows OST to HTML C# Conversion

using (var ost = PersonalStorage.FromFile("storage.ost"))
{
    // Ensure the output directory exists
    Directory.CreateDirectory(outputDirectory);

    var inbox = ost.RootFolder.GetSubFolder("Inbox");

    // Iterate through ost messages and save them as .html files
    int count = 1;

    foreach (var msg in inbox.EnumerateMapiMessages())
    {
        // Save each message as .html file
        var htmlFilePath = Path.Combine(outputDirectory, $"Message{count}.html");

        var htmlSaveOptions = new HtmlSaveOptions
        {
            ResourceRenderingMode = ResourceRenderingMode.SaveToFile,
            UseRelativePathToResources = true
        };

        msg.Save(htmlFilePath, htmlSaveOptions);

        Console.WriteLine($"Message {count} saved as: {htmlFilePath}");

        count++;
    }
}
 
  • Free App to Convert OST to HTML

    Other Supported Conversions

    You can also convert OST into many other file formats including few listed below.

    OST TO EML (Outlook Email Messages)
    OST TO EMLX (Apple EMLX Format)
    OST TO ICS (iCalendar)
    OST TO MBOX (Electronic Mail Messages)
    OST TO MHTML (Web Page Archive Format)
    OST TO MSG (Outlook & Exchange Format)
    OST TO OFT (Outlook Email Templates)
    OST TO PST (Outlook Personal Storage Files)
    OST TO VCF (Virtual Card Format)