To convert MSG files into PST, you have two options: manual or automated tools.​

Manual method

• Create a new folder in Outlook, then drag and drop all MSG files into it; Outlook stores them inside the default PST or an exportable PST.​
• Alternatively, copy MSG files from Windows Explorer and paste into the Outlook folder; then use Outlook’s Export to create a PST if needed.​

Limitations

• Manual steps are slow for bulk data and may risk integrity or version compatibility issues; Outlook must be installed.​

Automated tools

• Dedicated converters support batch import, preserve headers/attachments, and let you create a standalone PST quickly (examples include utilities from vMail, VartikaSoftware, and others).

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