WholeClear PST to MBOX Converter tool is the best way to move your PST files to MBOX files. It comes with a preview feature so users can see what the PST file database will look like before they convert it. It is also possible to convert very large Microsoft PST files to the MBOX format with this tool. All folder structure, and text formatting, were always kept by the software. It creates an MBOX file that can be opened in Apple Mail, Opera, Thunderbird, Entourage, Eudora, and other MBOX-supportive email clients. This app can be put on any Windows system by the user.
Further details:
• It can convert multiple Outlook PST files to MBOX files at once.
• Make the transfer safe without losing any personal data.
• It can move both ANSI and Unicode PST files.
• Move certain PST files, emails, and folders to MBOX.
• A no-cost trial version is offered by this tool.

Visit here: https://www.wholeclear.com/pst/mbox/