If a user can choose an easy way to import PST to MBOX file, you can try the effective PST to MBOX Converter software. Users can quickly take advantage of the advanced batch conversion feature that can convert single and multiple files without damaging the file. This software is compatible with Outlook versions like 2019, 2016, 2013, 2010, 2007, 2003 etc. User can import any file size as there is no limitation without data corruption.
