OST files can save and store data while the system is not connected to the internet; it works on both modes, such as offline and online. Usually, OST is an offline storage table that can store all the system’s data in an offline mode. OST file format also includes such mailbox items to store the data such as attachments, contacts, email messages, notes, tasks, calendar, journals and other items.<\/p>\n\n\n\n
PST stands for personal storage table, storing all the personal files and folders in your system. Even you can also save all the emails, journals, tasks, contacts, calendar entries etc. There are some PST file formats named POP3, IMAP, and HTTP. So Outlook PST saves the data in these formats.<\/p>