If you looking for the free conversion of MBOX to PST then suggest you try the manual Technique which includes different method
Step 1.Using Mozilla Thunderbird To Gmail Via IMAP
This manual technique has number of steps, which you have to perform one after the other.
- Setup Gmail as IMAP account in Mozilla Thunderbird
- Install the add on of Import /Export which will help to export the mails
- Select the desired folder where you wish to import the selected files.
- Copy the selected mails to different/ targeted folder as per the convenience
Note: For Emails you have received create : All mail
For Sent mail: Gmail Sent
If you wish to see the message in Inbox then Gmail Inbox
- Further you can send the imported file to Outlook
- Then, Export the PST file from Outlook
Step 2. Via using different Email Client : As MBOX format is associated with different email clients, so you can convert using different Email clients like Apple Mail, Eudora and other. This is bit lengthy and time consuming but
Though I haven’t tried the second method but you can check the brief from here
Free Tutorial : Steps to Convert MBOX to Outlook PST