Use of a specialised tool to export OST files to PST without Outlook. With this, you may export all of the data from an OST file’s inbox, including emails, attachments, contacts, calendars, tasks, etc., into a PST file. It’s an entirely Windows-based application that works with MS Outlook and all current Windows editions. Without installing Outlook, you can convert OST to PST without Outlook in a matter of clicks. Additionally, a free demo version is available for you to use to convert up to 25 items from OST files into PST format.
Here are the simple steps to export emails from OST file into PST format -
Step 1. Install and Launch SysConverter for OST on your system.
Step 2. Select Click on Open >> Email Data File >> OST File >> Select File from Foder.
Step 3. Click on Export and choose PST format.
Step 4. At last, browse the saving location and hit on the Save button.
Done! Here you export emails from OST file into PST format without using the Outlook interface.