Export Messages Outlook for Windows
- Select File > Open & Export > Import/Export.
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- Select Export to a file, and then select Next.
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- Select Outlook Data File (.pst), and select Next.
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- Select the mail folder you want to back up and select Next.
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- Choose a location and name for your backup file, and then select Finish.
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- The messages that you keep in a .pst file are no different from other messages. You can forward, reply, or search through the stored messages as you do with other messages.