How to Convert OST to MBOX File Format with Attachments

Converting an OST (Offline Storage Table) to MBOX is important for professionals who manage email data across different platforms. OST is associated with Microsoft Outlook, while MBOX is used in multiple applications, including Thunderbird, Apple Mail, and many more. To make this process simple, we have discussed the best approaches to convert OST to MBOX. Additionally, you can try the Outlook OST to PST Conversion Tool for direct and smooth results.

Why Convert OST Files to MBOX?

While both MBOX and OST store emails, calendars, and other valuable data, MBOX offers several extra advantages including:

• MBOX works with different email clients, while OST is only used by MS Outlook.
• The MBOX data files are easy to back up and simple to share across different platforms.
• It provides a large space to store multiple OST email files in a single MBOX file.

How To Export OST to MBOX?

Converting an OST file to MBOX format can be done using various methods. While some methods may require technical skills, others offer a straightforward approach. Here are the most common ways to convert OST files into MBOX format.

Manual Method to Convert OST to MBOX Free

There are multiple manual methods available for this conversion. Also, manually converting OST files into MBOX format involves more steps and has some limitations. It’s still possible to perform as: First Convert Outlook OST to PST and then convert that PST to MBOX. 

Method 1: Transfer OST Files to MBOX Using MBOX & Thunderbird

Important Note: You need to install or run MS Outlook and Thunderbird on your system.

Step 1: Export OST Files to PST Using MS Outlook

1. Firstly, launch Outlook on your system where the OST file is stored.
2. Now, click on File and select Open & Export from a given list.
3. Afterward, choose Export to a File and pick Outlook Data File (.pst).
4. Further, select OST files and click on Finish.

Step 2: Move the PST File to Thunderbird to Convert OST to MBOX

Note: Your Outlook Account should be configured with a Thunderbird Account. Then, continue with these steps:

1. Run Thunderbird on your system and click on Tool.
2. Now, select Import and choose Import from Outlook. Click Continue.
3. Further, select the mailbox folder from your Outlook profile to export.
4. Lastly, review the selected options and click Finish to complete the process.

Step 3: Import PST Files to MBOX Using Thunderbird

1. Again, open Thunderbird and download the ImportExportTools NG extension.
2. Now, click Tools, choose ImportExportTools, and then Export all the Folders.
3. Finally, define the location to Save the resultant file and select the folders to export.

Method 2: Move OST Files to MBOX With IMAP Configuration

1. Alternatively, the process starts by configuring an IMAP in MS Outlook. 
2. After that,  you need to sync your OST data to the IMAP server.
3. Further, open Thunderbird and sync with the IMAP account.
4. In the end, you can easily export emails from Thunderbird as MBOX.

Limitations of the Manual Method

• The manual method requires the installation of MS Outlook and Thunderbird.
• This process is lengthy, and complex, and consumes more time in syncing.
• It increases the chances of data loss and misinterpretation while performing.
• Requires technical skill and a good understanding of Outlook & Thunderbird.

Dedicated Software to Convert OST to MBOX

The Outlook OST to PST Conversion Tool is one of the best and most reliable solutions. The software comprehensively transfers OST files into MBOX formats including emails, contacts, attachments, and tasks. In addition, this top-notch utility is designed to convert Outlook OST files into 15+ file formats and different email clients. Also, it provides a simple, easy-to-use interface to convert OST files to MBOX directly, and provides more advanced features such as: 

• Convert OST to PDF, Thunderbird, and other formats.
• Allow users to preview the content before saving it.
• Option to remove duplicate emails as per your need.
• Highly compatible with all Windows OS versions.

Steps to Convert OST to MBOX Online Free

1. Firstly, download and install the Outlook OST to PST Conversion Tool.
2. Select Single Files or Multiple Files/Folders to add an OST and click Next.
3. Further, preview and select the files/folders. Press Next to continue.
4. After that, choose Saving Format as MBOX from the given list.
5. Use optional features and define the location to save the resultant file.
6. Lastly, click on Convert to complete the conversion process directly.

Conclusion

To wrap up, converting OST to MBOX ensures data flexibility and accessibility across multiple platforms. Manually convert OST to MBOX is time-consuming and has a chance of losing data. Additionally, it requires a stable internet connection and is only applicable for IMAP-compatible email accounts. For hassle-free conversion, use a professional tool. The free version of this tool is also available or you can switch it into the full version at any time.

Frequently Asked Questions