you can export OST to PST without the use of Outlook with Softaken Microsoft Outlook OST to PST Converter. It is an inexpensive option that directly export OST files into a various of file formats and recover data from lost and destroyed OST files. Before converting OST files into PST, show preview of all selected items. It is possible to rapidly scan converted files, harmed, and orphaned or inaccessible OST files. The majority of the OST data, including emails, contacts, calendars, tasks, etc., are migrated as a result. Furthermore, all OST files can be fully previewed using this software. OST files that are password- and encryption-protected can be converted to PST files with this program. There are countless ways to save OST to PST files, but there aren't many ways to quickly convert the Outlook contact book. This application works flawlessly on MS Outlook 2021, 2019, 2016, 2013, 2010, 2007, and 2002. For the trial version, go to the website.