What is the easiest way to export PST to MBOX?

Various email clients and readers are available for opening MBOX files. However, exporting a PST file to the MBOX format can be a challenging task.

We recommend that users try the MailsDaddy PST Converter tool to easily access and migrate data from PST files to MBOX format. This application preserves all data items including inline images, attachments, etc. during the conversion process. It also offers numerous additional features, such as previewing, batch migration, and filtered conversion, all accomplished with just a few simple clicks. The demo edition of this software allows for the migration of up to 20 emails per folder.