Summary
Outlook allows users to save emails, contacts, and appointments as individual files, which can be used to back up or share certain messages or make them easily accessible.
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Additionally, users can change the default file format for saving messages by selecting the "Save As" option in the Save As dialog box.
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Finally, Microsoft provides a way to back up email for Outlook for Microsoft 365, Outlook 2021, Outlook 2019, Outlook 2016, and Outlook 2013 by automatically moving or deleting older items with AutoArchive, or exporting the message folders to a.pst file that can be restored later as needed and used by importing.
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