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Convert MBOX to MSG in Java

Native MBOX to MSG conversion using Java Email library, without needing any additional software.

How to Convert MBOX to MSG Using Java

In order to render MBOX to MSG, 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 MBOX to MSG via Java

Java programmers can easily convert MBOX file to MSG in just a few lines of code.

  • Load MBOX file with Aspose.Email for Java MailMessage.load.
  • Call the save() method.
  • Pass the output file path with (MSG) file extension.
  • Open MSG 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 MBOX to MSG - Java

// Load MBOX File
Aspose.Email.Formats.Mbox.MboxrdStorageReader reader = new Aspose.Email.Formats.Mbox.MboxrdStorageReader("Source.mbox", false);

// Start reading messages
MailMessage message = reader.ReadNextMessage();

int i = 0;

// Read all messages in a loop
while (message != null){

	// Save this message in MSG format
	message.Save("Msg"+ i + ".msg", MailMessageSaveType.getOutlookMessageFormat());


	// get next message
	message = reader.ReadNextMessage();

// Close the streams
  • MBOX to MSG Conversion Live Demos

    Other Supported Conversions

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

    MBOX TO EML (Outlook Email Messages)
    MBOX TO EMLX (Apple EMLX Format)
    MBOX TO HTML (Hyper Text Markup Language)
    MBOX TO ICS (iCalendar)
    MBOX TO MHTML (Web Page Archive Format)
    MBOX TO OFT (Outlook Email Templates)
    MBOX TO OST (Offline Storage Files)
    MBOX TO PST (Outlook Personal Storage Files)
    MBOX TO VCF (Virtual Card Format)