Offline Storage Table, also known as OST, is a common file format. This file format is used by MS Exchange to store mailbox data items like emails, contacts, calendars, tasks, and magazines locally. Microsoft Outlook 2013 and later will save all the data in the OST file if you configure an IMAP account. Users can work offline when using an OST file. Convert Ost to Pst user can create and manage emails in offline mode, as well as retrieve previously downloaded data including email, calendar, and journals, using OST.
There are several causes. However, users typically convert OST to PST in order to create a backup of the OST file. Users can avoid unintentional data deletion or loss with its assistance.