Step 1: Download & Install Converter Software for PST.
Step 2: Select Destination Path to Save the Converted File.
Step 3: Choose the MBOX File from Saving File Options.
Step 4: Click on the Export button to Convert into Selected File Format.

Hey, if you want to convert the PST to MBOX then, I would like to recommend to use the best PST converter tool like CloudMigration PST file Converter tool. this tool help to convert your PST file into multiple file formats and it also help to add multiple file at the same time.

Download ZOOK PST to MBOX Converter for the assured conversion of Outlook PST to MBOX format. the tool is fully supportable to all the latest version of Outlook i.e. it supports Outlook 2016, 2013, 2010, and all below editions. It is also capable to import MBOX files in any MBOX based email clients such as Mac Mail, Eudora, Thunderbird, Opera Mail and many more. By using this tool, users can easily extract Outlook emails to MBOX format in few moments. Users can also test the free demo of the utility which allows user to perform the migration from PST to MBOX format. It is the safe solution to check the efficiency of the utility without any trouble.
Explore More:- https://www.zooksoftware.com/pst-to-mbox/

You should try the if you're looking for a free PST File to Thunderbird Conversion that name is eSoftTools PST to MBOX Converter Software. This also began to work in a very direct, clear, and dynamic manner. The program works with both new and old versions of Microsoft Outlook. Convert encrypted/password-protected PST files to MBOX with ease. We are here to help. Immediate is available 24 hours a day, seven days a week. There is a free trial version of this software available for all customers. In the trial version, you can convert 25 email items per folder without any price.
Visit here:- https://www.esofttools.com/pst-to-mbox-converter.html

If you want to convert PST to MBOX, the SYSessential PST to MBOX Converter is a great choice. It converts PST files to MBOX and allows users to import them into Thunderbird or any other MBOX-based email client, including Mac Mail, Eudora, Entourage, Opera Mail, and many others. It converts Outlook PST files to MBOX files, including Outlook emails, contacts, calendars, notes, tasks, and other data. The utility is a simple way for users to convert PST files to MBOX files without losing any data. So, they can easily convert PST files to Outlook 2019, 2016, 2013, 2010, 2007, or any of the below versions of Outlook. The tool also offers to create a new folder and save the resultant MBOX file in it at their desired location. Users can also try out the utility's free demo, which allows them to export a few items from a PST file to an MBOX format in a single step.

For More Information: https://www.sysessential.com/blog/convert-pst-to-mbox-with-simple-and-easy-tricks/

PST to MBOX Exporter Free Unlimited certainly export data of Outlook PST file into Mozilla Thunderbird files efficiently and this software. It also provides a free demo version for converter software users. It also provides a free trial version for the change tool users.

Click here: https://www.sametools.com/convert/pst/

Hi there,
I would like to suggest a tool that will help you from scratch. You don't need any technical knowledge for executing this. GUI of this tool is user-friendly and easy to use. You can even download the free version of this tool. https://www.shdatarescue.com/pst-converter/

You search the best PST to MBOX then, I suggest reliable PST to MBOX Converter. The software enables data to be saved in other file formats such as PST, EML, EMLX, HTML, PDF, etc. It can be split easily using the ANSI and Unicode formats. All MS Outlook elements such as folders, contacts, calendars, journals and email folders are fully supported.

Read more info: http://www.howtosol.com/products/pst-to-mbox-converter.html