Mozilla Thunderbird, Gmail, Apple Mail, Entourage, and various other email client mailboxes do not open in Outlook format because they have MBOX file format. To export MBOX email to Outlook PST format, users can use MailsDaddy MBOX to Outlook Converter. This single solution has multiple features to load and migrate data from MBOX to Outlook PST format. Users can install the software on different Windows OS and easily export Thunderbird email to Outlook PST.

Users can also convert MBOX to PST formats with all mail & attachments.

Get more detail: Import MBOX to Outlook

How to convert MBOX to PST Manually?