If you are looking for a solution to convert PST to MBOX file format then try Advik PST to MBOX Converter on your system. The software can export PST to MBOX in just a few simple clicks. It is a Select rustworthy solution that does not lose any single bit of data during PST to MBOX conversion. It can export PST emails with attachments. The tool is able to convert PST to MBOX in bulk.
Steps to Convert PST File to MBOX File Format
1. Run this software on your system.
2. Click on Select Files or Folders to add PST file.
3. Choose required email folders and press Next.
4.Select MBOX as a saving option.
5. Browse target location and press Next to start the process.