How to Convert Outlook PST and OST Files to Thunderbird (mbox)?
- eSoftTools
- Aug 18, 2021
- 3 min read

Looking for a solution to Convert Outlook PST and OST Files to Thunderbird (mbox)? If yes, then this blog post can help you. In this blog, we will provide you with techniques to change your PST file and OST file of Outlook into Thunderbird-supported
MBOX files. Read this complete blog and get the solution.
A situation where users need to Convert OST & PST to Thunderbird (mbox) files
Corruption in the OST or PST file and if Outlook is unable to access mailbox items from data files. The only solution to access the OST/PST file data is Conversion into a workable format like- MBOX.
Some users also want to switch from Outlook to Thunderbird. With switching from one email client to another users also need to transfer their important data. For transferring data users need to Convert OST/PST files into MBOX format.
These are some of the reasons why users need to convert Outlook PST and OST Files to Thunderbird (mbox). Now is the time to do this process. Below we have mentioned the technique which will help you to easily make Export Outlook items to MBOX files in simple clicks.
Utilize Third-Party Software
eSoftTools PST to MBOX Converter Tool to convert OST and PST File. It functions in a very simple and trouble-free manner. Using the mail filtering feature of PST to MBOX Converter, users can transfer emails from a PST file to an MBOX file starting at a specific date. All buyers have access to the Demo version. You can convert up to 25 email items per folder for free in the sample edition. 24/7 technical support also.
Upper-level features of PST to Thunderbird(mbox)
With no limitation, securely convert OST/PST to MBOX format.
After conversion, the user gets an MBOX file supported in a variety of email applications, including Thunderbird, Eudora, Mulberry, and others.
During conversion, it accepts both ANSI and UNICODE Outlook Data files OST and PST.
Outlook installation is not required to perform the conversion process.
Steps to Convert PST and OST to Thunderbird (mbox) files:-
Download/install the eSoftTools PST to MBOX Converter Software.

Press the "Select PST button" button from the menu provided in the welcome screen of the software.
The Software will open a new window with two options.
“Search File”:- In this option, you need to Select PST File from a known location.
“Select PST & OST File”:- This option searches all the PST and OST files from your local drive to select the required PST/OST files from unknown locations.
Choose an option Select/Search PST File and then “Start Scanning” button.

The software will automatically scan the PST file for repairing corruption errors and to retrieve all of the internal components of the Outlook data file.

The software will reveal all PST internal folders on the left side of the screen, as well as email items and their previews on the right side. Select the necessary email folders to go to the next process.

After you've made your selections, click the “Save PST” button on the menu bar. Your screen will now display a new window.

The user must select the “Export to MBOX” option. By choosing the Browse option, you may choose where you want to save the file. After that, click Convert to begin the conversion process.

After completion of PST to MBOX conversion, the software will display a confirmation box similar to this.

Conclusion:-
In this blog, we have discussed the How to Import PST files in Mozilla Thunderbird? and the reasons why users need to Convert Outlook PST and OST Files to Thunderbird (mbox). So in this blog post, we have provided a solution to resolve users' queries on “how to Convert PST and OST File to Thunderbird (mbox). Users can check the efficiency of the software by getting a free trial version of this software. In the free trial, you may convert 25 emails per folder and here you may get 24/7 technical support for any moment.
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