Online OST to PST Converter Utility - Version 3.7 A-One Online OST to PST Converter Utility helps you to convert Outlook OST to PST file format with its all items such as Inbox, Outbox and Drafts etc in instant steps. If Exchange Server crashed due to h/w failure, then you must try this Online OST Converter software that can convert your offline data file (OST) to Outlook PST format. You can download the Free Convert OST to PST Online Version to confirm/check that whether it will be worth for your money or not. To effectively use the Online Converter for OST files, view online help @onlineosttopstconverter.hpage.com for more information. Demo version of the OST2PST Converter will display the preview of the recovery process of OST files. But to save OST files to MSG/PST/EML format, you need to purchase the full operative version available only at $99.