If you are unable to access email after OST synchronization process from Offline folders, then you should Convert OST to PST data files using the renowned software named Kernel for OST to PST. The software is outfitted with amazing migration features, which enables you to export OST mailboxes to cloud-based Office 365 accounts. Moreover, the software allows you to easily Convert OST to PST Files that can be opened in MS Outlook 2016 platform.