To prevent unauthorized access to data, it is best to use a portable application of the MBOX converter. Apart from the
online MBOX to PST converter, the portable MBOX converter has more benefits such as no Internet connectivity, no possibility of data leaks, full security, multiple export formats, unlimited migration, and more.
So if you ever want to convert email from MBOX to PST format then adopt MailsDaddy
MBOX to PST Converter. This is the best GUI tool to my knowledge that helps you send emails from MBOX to PST, Office 365, EML, MSG, HTML, etc. You can also use the free demo version and migrate 20 emails per mailbox for free.