To convert MSG files to an Outlook PST file, first collect and back up the required MSG messages. Select a suitable conversion method that supports MSG-to-PST conversion and batch processing if needed. Add the MSG files or source folder, choose PST as the output format, configure folder and attachment options when available, and start the conversion. After completion, open or add the resulting PST in Outlook and verify messages, folders, dates, and attachments. Keep the original MSG files until verification is complete. For large collections, batch conversion is generally more efficient than manually processing individual messages.
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