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Convert OST to MHTML in C++

High performance OST to MHTML conversion using C++ Email library.

How to Convert OST to MHTML Using C++

In order to convert OST to MHTML, we’ll use

Aspose.Email for C++

API which is a feature-rich, powerful and easy to use document manipulation and conversion API for C++ platform. You can download its latest version directly, just open


package manager, search for Aspose.Email.Cpp and install. You may also use the following command from the Package Manager Console.


PM> Install-Package Aspose.Email.Cpp

Steps to Convert OST to MHTML via C++

C++ programmers can easily convert OST file to MHTML in just a few lines of code.

  • Load OST file with PersonalStorage::FromFile.
  • Call the SaveAs() method having two parameters.
  • Output MHTML file and FileFormat::Mhtml as parameters.
  • MHTML file will be saved at the specified path.
  • Open MHTML file in compatible program.

System Requirements

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

  • Microsoft Windows or a compatible OS with C++ Runtime Environment for Windows 32 bit, Windows 64 bit and Linux 64 bit.
  • Aspose.Email for C++ DLL referenced in your project.

Convert OST to MHTML - C++

// Load the OST
System::SharedPtr<PersonalStorage> ps = PersonalStorage::FromFile(dataDir + L"sourceFile.ost");
ps->SaveAs(dataDir + L"outputFile.mhtml", Aspose::Email::Outlook::Mhtml::FileFormat::Mhtml);  
  • OST to MHTML Conversion Live Demos

    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 HTML (Hyper Text Markup Language)
    OST TO ICS (iCalendar)
    OST TO MBOX (Electronic Mail Messages)
    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)