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Outlook PST file provides a centralized storage of email folders, email messages, their attachments, contacts, calendar items, and so on. These items are stored in a binary format, which is not quite human-readable, but allows for fast access and search. If you have installed Outlook with the default settings, all the folders are contained within a single file (named "Outlook.pst"). You can have several different files (e.g. for the different mailing lists). The email storage is configured under "Data file management" in the "File" menu. There are two different formats
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