The reliable and best software for converting IMAP OST files is DataVare OST to PST Converter. It is the provider of an incredibly user-friendly and time-saving solution. It exports the single or multiple OST files to PST at once without losing any single bit of data. There are three licensed editions of the program available: Personal, Business, and Enterprise. It's Compatible with all Mac and Windows OS. It supports all versions of MS Outlook up to 2021 and offers a free trial pack to all users. To inspect the damaged OST file mailbox data and export the top 25 items from each folder of the OST mailbox, the app offers a free demo edition. The user must purchase the software's full version to convert unlimited OST files to PST with complete data.