If manual method doesn't work or unable to convert your mbox data then you can go with any third party software which available in huge amount on internet. But as per my recommendation, you should use this professional mbox to pst converter software which is most recommended software by the experts. With this software you can easily export single or mutliple mbox data into pst format in just single way.
With this software you can easily exports your MBOX mail to PST format and other file formats like EML, EMLX, MSG, HTML, etc. This tool supports more than 20 email clients like Apple Mail, Thunderbird, Sea Monkey, Opera Mail, etc. This tool is 100% secure for migrating MBOX mail to Outlook PST format and gives you an error-free PST file.
This software also supports to keep HTML format of Meta properties, embedded image, Attachment, etc. All users both technical or non technical can easily use this software without any technical skill and provide an enhanced and interactive easy to use user friendly interface. This software is support all version of outlook such as 2010, 2003 (SOHO), 2007, 2013, 2016 and Outlook 2019.
Read more:- http://www.mboxtopstconverter.pcrecoverytools.com/
I would like to suggest you use MBOX to PST Converter Software. This is the easiest way to convert MBOX file to PST. This software support Thunderbird, Sea Monkey, Apple mail and Opera mail, etc. , you can convert MBOX to PST and other multiple file formats such as MSG, EML, HTML, EMLX, etc. It extracts all the essential email components like To, Bcc, Cc, Sent, From, Received, Attachments, etc. It also supports all versions of Windows and MS Outlook.
Some tools are available in the market, you can search through google or I will recommend Convert OST to PST software, this tool will help you to convert emails from the OST to PST file format. Go ahead and download free software. Visit here: http://www.sametools.com/convert/ost/
Download free tool to transfer emails from OST to PST file format. This tool will help you to migrate OST to PST file format. You can download free tools from here:-https://www.toolsbaer.com/ost-to-pst-conversion/
If you want to convert MBOX to PST Converter, then you can simply go with ZOOK MBOX to PST format is a wonderful solution to Convert MBOX to PST format. It allows the user to export and import MBOX to Outlook without any additional effort. It consists of various advanced features that allow any non-technical user to convert MBOX to PST in a few clicks.Provides complete conversion of MBOX data items such as emails, contacts, attachments, etc. into PST format.It supports MBOX files of several MBOX based email clients such as Thunderbird, Mac Mail, Eudora, Entourage, etc.It is a Windows based utility which can smoothly works on any version of Windows OS.In the free demo of the utility, users are allowed to convert 25 items of MBOX file into PST file format for Outlook.
For reliable conversion from MBOX to PST format I would like to suggest a tool named as MailsDaddy MBOX to PST Converter that easily converts MBOX files into Outlook PST format with various MBOX supportable email clients such as Apple Mail, Gmail, Thunderbird, Eudora, Opera Mail, Poco Mail, and many more. The converted PST file supports all versions of Outlook without any problem and it comes with a free trial version and also provides 30 days money back guaranty.