I want to share my experience with MailsDaddy MBOX to PST converter which is the best GUI based application. This MBOX convert is capable of maintaining folder structure as it was before and also creates a new PST file for Outlook. With this solution, users can easily get precious mail and can export to PST or other given formats. Not only this, it runs on all windows versions and easily works with large size databases. The tool support all MBOX, MBS and MBX based email clients data such as Apple mail, Opera mail, SeaMonkey etc.