PST (Personal Folder File)

The place where Outlook stores its data (when Outlook is used without Microsoft Exchange Server). A PST file is created when a mail account is set up. Additional PST files can be created for backing up and archiving Outlook folders, messages, forms and files. The file extension given to PST files is .pst.

The place where Outlook stores its data (when Outlook is used without Microsoft® Exchange Server). A PST file is created when a mail account is set up. Additional PST files can be created for backing up and archiving Outlook folders, messages, forms and files. The file extension given to PST files is .pst.