If your goal is to legitimately in a compressed format, you can use official Google tools: Use Google Takeout to Export Your Mail
: You can also click the View button to see the contents of a RAR or ZIP file before downloading. Security Warning Download 710k Gmail rar
: Once Google finishes processing your request, you will receive an email with a download link. Downloading RAR Attachments from Gmail If your goal is to legitimately in a
: Choose "Export once" and select your preferred file type. While Takeout usually provides .zip or .tgz files rather than .rar, these formats serve the same purpose of compressing large amounts of data. Download 710k Gmail rar
