The best software to convert OST to PST files is EmailsGuru OST to PST Converter. It is specifically designed to convert OST to PST files. It offers an easy-to-use interface, ensuring quick and accurate conversion without data loss. The tool preserves all mailbox components like emails, contacts, calendars, and attachments during the process. It is fully safe and easy way, offering users to convert OST to PST file with or without Outlook. It easily works with all versions of Windows OS. A free trial version of this well developed tool also available for all new users.