Available on Windows, macOS, and Linux.
Need to export mails to Thunderbird from OST file on Windows? Get a software solution that allows you to perform bulk conversion. Plus, we offer you a step by step procedure to move mails from Outlook OST into Thunderbird. So, let us find a way to perform smart migration.
Get the useful download link above and install the application on your Windows platform. The software is designed by taking care of all users. You can check the simple interface due to which both beginners and professionals can effortlessly operate the application. Without facing any kind of trouble, the conversion task gets completed.
DownloadBuy NowStep 1. Download and Start WholeClear OST to MBOX Converter on your system.
Step 2. Select Offline Outlook Storage File (.ost). Click Next: Data Explorer.

Step 3. Pick Browse files... or Browse folder... and load OST files. Then click Continue to Destination.

Step 4.Select Convert to MBOX file format and click the Next button.

Step 5.Choose MBOX Type – Single MBOX or multiple MBOX file.

Step 6. use the Browse output folder button and provide an output destination to save MBOX files.

Step 7.Press the Convert selected button and the conversion process gets started.

Having gone through the above steps, one can get MBOX files that they can simply import to Thunderbird, Mac Mail, Postbox, Entourage, Eudora, and others.
Note: The wizard is Source → Explorer → Destination → Convert. After choosing the source, click Next: Data Explorer. Add data with Browse files... or Browse folder..., then Continue to Destination. On Convert, use Browse output folder and start with Convert selected when Ready Check is green. The demo processes up to 25 items.
One can simply export emails of Outlook OST into Thunderbird MBOX format in a short time period using this software. Without depending on any email client, the conversion task gets over. Professionals have tested this application so no chance of data loss. Freely analyze the software with demo edition and export only 25 items per folder. Apply for the licensed edition and export unlimited OST items.
Need to export mails to Thunderbird from OST file on Windows? Get a software solution that allows you to perform bulk conversion. Plus, we offer you a step by step procedure to move mails from Outlook OST into Thunderbird. So, let us find a way to perform smart migration.
Step 1: Download and Start WholeClear OST to MBOX Converter on your system. Step 2: Select Offline Outlook Storage File (.ost) . Step 3: Pick Browse files... or Browse folder... and load OST files . Step 4: Select Convert to MBOX file format and click the Next button. Step 5: Choose MBOX Type – Single MBOX or multiple MBOX file. Step.
Yes. It runs on Windows 10/11, macOS 12+ (Intel and Apple Silicon), and Linux x64.
Yes. You can download a free demo to evaluate the process before buying a license.

