OST stands for Offline Storage Table while PST stands for Personal Storage Table. Both OST and PST are database files of MS Outlook to store mailbox items like emails, contacts, calendars, journals, notes, etc. Several times users need to convert OST files to PST format due to various reasons. In this situation, Users can take help of most useful ZOOK OST to PST Converter software. which is easy to use and supportable to Outlook 2019, 2016, 2013, 2010, 2007, etc. The software convert complete OST database files to PST file format including emails, contacts, notes, attachments, tasks, journals, etc. It is committed to protect data integrity and folder structure of OST files in new PST files. This utility can be installed in all version of Windows OS.