SysInspire OST to PST Converter is an easy-to-use program that converts multiple Exchange OST file mailboxes into Microsoft Outlook pst files. You can successfully recover selective single and multiple OST Emails to PST file with attachments, embedded images, notes, calendars, inbox items, outbox items, journals, notes, and appointments, etc. with Sysinspire OST to PST Conversion Software, which is also compatible with all versions of Outlook up to 2019.
Read More:- How to import OST file in outlook office 365

Here is the most trustworthy error-free PassFixer OST to PST Converter software with the high technique method which can properly convert multiple folders of OST into PST at the time without showing any error or issue. You can access this tool without the installation of MS Outlook or Exchange Server because it can support both editions. If you want to try this tool before purchasing then you can take the trial version which can help you to analyze it or explore it. Download the trial version from the official site of PassFixer.
Read More:- Convert OST files into PST