I recommend the eSoftTools "MBOX to PST Converter" tool if you want to convert MBOX files to Outlook PST. It can also convert MBOX files to other formats including NSF, MSG, EML, EMLX, HTML, and PST. Thunderbird, Apple Mail, SeaMonkey, Eudora, and other MBOX mailboxes are all supported by this software. With just a few clicks, you can convert several MBOX files.
Read more:- convert MBOX files to Outlook PST files

I can only suggest you MBOX File to PST Converter Tool on Windows operating system. It software allows immediate migrate of your email files which are in PST, EMLX, EML or MSG format. So I think the use of MBOX to PST Converter Online is good to convert Mozilla Thunderbird MBOX files to Outlook PST format. Try to this application with free demo version that move first 10 items of each folder.
Please let me know if anyone would like to learn how to export Opera emails to a PST file. Then I have the ideal solution for all of your Opera mail conversion issues: you may use the Sysinspire MBOX Converter tool, which has a number of advanced features for converting mbox files to a variety of files formats. Opera Mail, SeaMonkey, Eudora, Apple Mail, Pocomail, and other email clients are among the 25 that are supported. It works with all versions of Outlook and Windows up to and including Windows 10. It can also give a free trial version that allows customers to test the software by exporting the first 25 mbox files to pst files.
Read More:- Convert MBOX to PST
To convert MBOX files to PST you can use a professional tool BetaVare MBOX to PST Exporter it is a perfect tool to export MBOX files.
If you want to convert MBOX to PST file, try this awesome program called eSoftTools MBOX to PST Converter tool. It will provide users with the best facilities for MBOX to PST file exportation. It will detect your MBOX file and convert it to an Outlook file automatically. It can also include a free demo in which the first 25 items are converted into the required file format.
For more info- MBOX to PST Converter
Convert MBOX to PST Using Email Clients
Step 1: Import mailbox data into Apple mail
Run Apple mail in your system.
Go to File >> Import mailbox option.
Now select the source of the MBOX file and click continue.
On browse location, choose MBOX file then click continue.
After the import process complete, click done.
Step 2: Create mailbox using Eudora
Add the MBOX file extension to the file that is imported.
For example, ABCMBOX needs to be changed to abcMBOX.mbx
Move this to the Eudora directory. The default location of the file: “C: Documents and Settings user >> Application Data\Qualcomm\Eudora”
Then, Open Eudora and double-click on ABCMBOX.mbx and Close the application.
Step 3: Import mailbox using Outlook Express:
Launch Outlook Express.
Now, Go to File >>Import >>Messages.
Choose Eudora from the list of email applications and then choose Next.
Now, browse the location to select the ‘.mbox’ file and click on OK. Finally, click on Next>>Next >>Finish
In Outlook Express, the imported data can be used in the Local Folders
Step4: Import Mailbox from Outlook express to MS Outlook
To run into PST file format please ensure that MS Outlook is properly installed
Open MS outlook to export files.
Now, Go to the File>>import and export option.
Select import from “another file and folder” after which select next.
Next, choose Import Internet Mail and Addresses and click on Next
Select “Outlook Express 4.x, 5.x, 6.x, or window mail”. Click next
Select the file to import and export from the browser option and click next
Select to finish after the process completed.
The user can find the imported mailbox in your Outlook client.
Finding the best way to transfer MBOX file? Then Softaken software is a good choice. It is a fantastic program, it can migrate MBOX file data into Outlook PST, and a variety of other file formats, including EML, EMLX, HTML, MSG, Office 365, ICS, and others. Even every component of the software can be migrated without error. Each user is also given a free trial version. Refer:- https://www.softakensoftware.com/mbox-to-outlook-converter.html