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OST

Convert MHTML to OST via C#

MHTML to OST C# conversion using .NET API without Outlook® or Thunderbird® installed.

How to Convert MHTML to OST Using C#

Introducing the ultimate solution for converting MHTML files to OST format with efficiency and ease! OST files are used by Microsoft Outlook to store a local copy of a user’s Exchange mailbox, including emails, contacts, and other personal data, facilitating offline access. Effortlessly import a web page, saved in MHTML format, into an Outlook mailbox for offline access or archival with Aspose.Email for .NET - a powerful API that offers a comprehensive set of components to handle various email-related tasks, including creating, reading, and manipulating email messages, managing folders and attachments, filtering, search, and encryption.

By leveraging the powerful features of Aspose.Email for .NET, developers can seamlessly implement MHTML to OST conversion in their applications, gaining reliability, speed, and flexibility in the process. The library ensures the preservation of data integrity during the conversion process, accurately translating the content, structure, and attachments of MHTML files into the OST format, maintaining the fidelity of the original email data. This streamlined approach empowers developers to focus on the efficiency, flexibility, and customization of their applications while enhancing the user experience. Experience the transformative power of the .NET API and unlock a new level of email data management and interoperability for your applications.

Start utilizing the capabilities of the .NET API by performing 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 MHTML to OST via C#

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

  1. Open the existing OST file using PersonalStorage.FromFile.
  2. Load the MHTML file as a MapiMessage with MhtmlLoadOptions.
  3. Find the Inbox subfolder within the OST file’s root folder.
  4. Add the loaded MapiMessage to the Inbox folder in the OST.

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 MHTML to OST C# Conversion

using (var ost = PersonalStorage.FromFile("storage.ost"))
{
    // Load the EML file
    var msg = MapiMessage.Load("message.mhtml", new MhtmlLoadOptions());

    // Add the EML message to the OST file
    var folderInfo = ost.RootFolder.GetSubFolder("Inbox");
    folderInfo.AddMessage(msg);
}
 
  • Free App to Convert MHTML to OST

    Other Supported Conversions

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

    MHTML TO EML (Outlook Email Messages)
    MHTML TO EMLX (Apple EMLX Format)
    MHTML TO HTML (Hyper Text Markup Language)
    MHTML TO ICS (iCalendar)
    MHTML TO MBOX (Electronic Mail Messages)
    MHTML TO MSG (Outlook & Exchange Format)
    MHTML TO OFT (Outlook Email Templates)
    MHTML TO PST (Outlook Personal Storage Files)
    MHTML TO VCF (Virtual Card Format)