You can use this free Vartika TGZ to PST Converter tool; this software will help you convert emails from TGZ file format to PST. The software gives users the flexibility to transfer data from any version of Outlook. This is a free tool to export all your emails from TGS to PST without data loss and also to other formats like EML, EMLX, PST, HTML, MBOX and MSG.
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Run Outlook on your system and go to File > Info > Add Account tab.
Click on 'Yes' to configure Outlook to your email account.
From the available option, click on the 'Manual Setup' tab.
Click on the 'Next' button.
Now, click on the 'IMAP or POP' option.
Fill the relevant information such as Account Type, Email Address, Password, and etc.
Go to 'More Settings' tab.
Click on the 'My Outgoing Server' and enable it.