I suggest using the
MailConverterTools MBOX File Viewer to open and view MBOX files, it allows users to view corrupt MBOX files without any data loss. Using this software, users can easily see all the details like emails, contacts, tasks, journals, and attachments, along with their properties. Additionally, this software allows users to
convert MBOX files to PDF, PST, MBOX, MSG, EML, EMLX, and so on. Apart from this, the software is compatible with Windows and Mac OS.