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MSG

OST to MSG Converter for Java Applications

Intuitive Java API to convert email files between formats. OST to MSG conversion code sample and its integration with Java projects.

Convert OST to MSG using Java API

Aspose.Email for Java provides an efficient and reliable solution for converting email files between various formats. It simplifies the process of email format conversion by providing a straightforward and efficient API. Try the concise and straightforward code sample that demonstrates the ease and efficiency of the email format conversion process. The code represents classes and methods for creating objects and manipulating them enabling developers to handle email data with ease and precision and achieve reliable and accurate results.

With the Java API, you don’t have to worry about complex algorithms or tedious manual work, saving time and effort for more important tasks to take your email processing applications to the next level.

How to Install Aspose.Email for Java Library

To start utilizing the capabilities of the powerful and feature-rich Java API is easy with one of the following actions:

  • download its latest version from Maven

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

<repository>
<id>AsposeJavaAPI</id>
<name>Aspose Java API</name>
<url>https://repository.aspose.com/repo/</url>
</repository>
<dependency>
<groupId>com.aspose</groupId>
<artifactId>aspose-email</artifactId>
<version>version of aspose-email API</version>
<classifier>jdk17</classifier>
</dependency>

In case of difficulties or questions regarding the installation process of the API, please visit the Installation section of our documentation .

How to Convert OST Files to MSG Format

Converting OST (Outlook Offline Storage Table) files to MSG format using Aspose.Email for Java offers a seamless solution for efficiently handling email data. With the user-friendly API provided by Aspose.Email, developers can effortlessly parse OST files, extract email content, and convert it into MSG format. This conversion process preserves the original email layout, attachments, and metadata, ensuring a smooth transition of information. By leveraging Aspose.Email’s reliable conversion tools, developers can easily integrate OST to MSG conversion capabilities into their applications.

To convert OST files to MSG format, the library offers the PersonalStorage class which is used to open a storage file, allowing access to its content and structure. The FolderInfo class represents a folder within the storage file and makes it possible to manipulate its content. The library also has the StandardIpmFolder enumeration to define standard folders within an Outlook personal storage file. In the code snippet below, the ‘StandardIpmFolder.Inbox’ is used to specify the Inbox folder. The MapiMessage class provides developers with a comprehensive set of functionalities to work with email messages programmatically, enabling them to efficiently manage, manipulate, and interact with email data within their Java applications. The collection of email messages is stored with the MessageInfoCollection class. With the MessageInfo class, representing information about a specific email message, you can access details of each email message within a folder. The SaveOptions class provides options for saving email messages in different formats. In the code sample below, these classes work together to open an OST file, retrieve messages from the Inbox folder, extract and save each message as an MSG file in a destination folder. For more information about the API high code features, please visit our reference resources .

Steps to Convert OST to MSG via Java

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

  1. Open the OST file “Outlook.ost” using PersonalStorage.fromFile method.
  2. Get the predefined Inbox folder information from the OST file with ost.getPredefinedFolder .
  3. Retrieve the collection of messages in the Inbox folder using folderInfo.getContents() .
  4. Iterate through each message in the collection.
  5. Get the message information at the current index.
  6. Extract the MapiMessage from the message information using ost.extractMessage(msgInfo) .
  7. Save the extracted MapiMessage to a destination folder with a filename based on the index specifying options for saving.

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 MSG - Java

PersonalStorage ost = PersonalStorage.fromFile("Outlook.ost");
FolderInfo folderInfo = ost.getPredefinedFolder(StandardIpmFolder.Inbox);
MessageInfoCollection miCol = folderInfo.getContents();
for (int i=0;i< miCol.size();i++){
MessageInfo msgInfo = (MessageInfo)miCol.get(i);
MapiMessage mapi = ost.extractMessage(msgInfo);
mapi.save("DestFolder\\" + i + ".msg", SaveOptions.getDefaultMsgUnicode());
}    
 

What is OST File Format?

OST (Offline Storage Table) file format is a file that stores a copy of mailbox items from an Exchange server, allowing users to access their mailbox data even when they are offline. OST files are synchronized with the Exchange server when a connection is established, ensuring that any changes made offline are updated on the server as well. OST files are used by Microsoft Outlook for email, contacts, calendars, tasks, and other mailbox items in an Exchange environment.

What is MSG File Format?

MSG is a file format used by Microsoft Outlook to store emails, contacts, calendar items, tasks, and other information. An MSG file contains all the components of an email, including the message body, attachments, sender and recipient information, subject, date, and other metadata. This format allows users to save individual email messages or entire folders in a single file for easy storage and sharing. MSG files can be opened and viewed by Microsoft Outlook and some other email clients, but may not be compatible with all email programs.

File Format Conversions supported by Aspose.Email for Java

Aspose.Email for Java offers an extensive set of file format conversions designed to seamlessly handle emails, contacts, calendars, attachments. It empowers developers to effortlessly manipulate and transform data to meet the diverse needs of their applications. Implementing file format conversions in email applications facilitates their interoperability and elevates efficiency. Overall, the library supports conversion from EML , EMLX , ICS , MBOX , MHTML , MSG , OFT , OLM , OST , PST , VCF to other formats elevating user experience.
  • OST to MSG 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 MHTML (Web Page Archive Format)
    OST TO OFT (Outlook Email Templates)
    OST TO PST (Outlook Personal Storage Files)
    OST TO VCF (Virtual Card Format)