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Convert OST to MHTML in Java

Native OST to MHTML conversion using Java Email library, without needing any additional software.

How to Convert OST to MHTML Using Java

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

Aspose.Email for Java

API which is a feature-rich, powerful and easy to use conversion API for Java platform. You can download its latest version directly from


and install it within your Maven-based project by adding the following configurations to the pom.xml.


<name>Aspose Java API</name>
<version>version of aspose-email API</version>

Steps to Convert OST to MHTML via Java

Java 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.Ost as parameters.
  • Open MHTML file in compatible program.

System Requirements

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

  • Microsoft Windows or a compatible OS with Java Runtime Environment for JSP/JSF Application and Desktop Applications.
  • Get latest version of Aspose.Email for Java directly from Maven .

Convert OST to MHTML - Java

PersonalStorage sFile = PersonalStorage.fromFile("sourceFile.ost");

sFile.saveAs("outputFile.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)