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3.4 Can I download the PDF attachments with a 'Open Password'?

3.4 Can I download the PDF attachments with a 'Open Password'?

Owned by Bruce
Last updated: Aug 04, 2023 by huwenhua

Result: Download the PDF attachment with the 'Open Password' set, and no watermark will be added.

Reason: If the PDF attachment is set to 'Open Password', the program cannot directly read the attachment content, so it cannot add a watermark.