eSoftTools PST to MBOX Converter Software is the best tool for it to convert Outlook emails to MBOX. This is useful for really basic procedures and even ones that are not difficult to comprehend. Users can convert emails from a PST file to an MBOX file starting on a specific date by using the MBOX program's mail filtering capability. The free trial edition allows users to export up to 25 email items per file. All versions of MS Outlook and Windows are supported by the software.
For more information:- https://www.esofttools.com/pst-to-mbox-converter.html