OST vs. PST Essential Insights for Outlook Users It is crucial to make a clear distinction between OST and PST files to be able to work efficiently with Microsoft Outlook. The OST files are employed for offline storage and are most closely associated with Microsoft Exchange Server to enable users to work offline. Any changes that are done offline are then updated once the connection is re-established. On the other hand, PST files are copies of emails, calendars and contacts that are created at the time an Outlook account is configured. They are convenient to use and can be backed up or transferred from one place to another. Converting from one to the other may be required in data recovery, server problems or when dealing with large PST files. To make the conversion easier one can use third party tools like OST to PST Converter. Understanding the difference between OST and PST allows Outlook users to maintain the efficiency of their work and minimize risks of losing important information. https://www.linkedin.com/pulse/ost-vs-pst-key-insights-outlook-files-conversion-karan-singh-tfnxe