GainTools MBOX to PST Converter is the best solution for converting MBOX files to PST in bulk. It exports mbox files in batches, including attachments. Before converting, it scans and displays a live preview. The software is compatible with all mbox email clients (Thunderbird, Apple Mail, Opera Mail, etc.) and Windows operating systems.
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https://www.gaintools.com/mbox/
https://www.gaintools.com/mbox/pst/
https://www.gaintools.com/how/export-thunderbird-to-ms-outlook-pst-file-format/
https://www.gaintools.com/how/export-mbox-to-pst-manually/
https://www.gaintools.com/how/convert-mbox-to-pst-freely/
https://www.gaintools.com/how/export-email-items-from-cpanel-to-outlook/