Aspose.Email  for .NET

OFT File Viewer for .NET

View OFT without needing Microsoft Outlook or Thunderbird installed.

How to View OFT File Using C#

In order to view OFT file, we’ll use

Aspose.Email for .NET

API which is a feature-rich, powerful and easy to use API for C# platform to be used with any Viewer. Open


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

Package Manager Console Command

PM> Install-Package Aspose.Email

Steps to View OFT via C#

Aspose.Email makes it easy for the developers to view the OFT file with just few lines of code.

  1. Load OFT file in an instance of MailMessage via Load method
  2. Call the MailMessage.Save method to save OFT in HTML format
  3. Call Process.Start with path to resultant HTML to load OFT content in default browser

System Requirements

Aspose.Email for .NET is supported on all major operating systems. Just make sure that you have the following prerequisites.

  • Microsoft Windows or a compatible OS with .NET Framework, .NET Core, and Xamarin Platforms
  • Development environment like Microsoft Visual Studio
  • Aspose.Email for .NET referenced in your project

C# code to view OFT

string output = System.IO.Path.GetTempPath() + Guid.NewGuid().ToString() + ".html";

// load the OFT file in an instance of MailMessage
using (var message = Aspose.Email.MailMessage.Load("template.oft"))
    // save OFT in HTML format
    message.Save(output, Aspose.Email.SaveOptions.DefaultHtml);
// load resultant HTML in default browser
  • About Aspose.Email for .NET API

    Aspose.Email is a Microsoft Outlook and Thunderbird formats parsing solution. One can easily create, manipulate, convert email and storage formats such as MSG, EMLX, EML and MHT. Handling of email attachments, customization of message headers and implementation of different network protocols like POP3, IMAP & SMTP to send & receive emails is much easier. Its a standalone API and does not require Microsoft Outlook or any other software installation.

    Free App to View OFT

    Other Supported Viewer Formats

    Using C#, One can also view many other file formats including.

    EML (Outlook Email Messages)
    EMLX (Apple EMLX Format)
    ICS (iCalendar)
    MBOX (Electronic Mail Messages)
    MSG (Outlook & Exchange Format)
    OST (Offline Storage Files)
    PST (Outlook Personal Storage Files)
    VCF (Virtual Card Format)