If you want to export Outlook OST files to PST format, the easiest and safest way is by using eSoftTools OST to PST Converter Software. Normally, Outlook doesn't allow you to open or export OST files directly, especially if the Exchange account is not connected. With eSoftTools OST to PST Converter, you can easily convert your OST file into PST format in just a few clicks. The software seamlessly exports all mailbox items, including emails, contacts, calendar, notes, tasks, and attachmentswithout any data loss.

It also works with corrupted or orphaned OST files and maintains the same folder structure and formatting after conversion. The best part is that it supports all Outlook versions (2021, 2019, 2016, 2013, 2010, etc.) and Windows systems. You can try the free demo version to export 25 items per folder and check the performance before purchasing. This is the simplest and most reliable way to easily export OST to PST.

Read More:- Export Outlook OST to PST