Assertive Time-Sensitive Document Demand Letter

I need a sharply worded yet professional demand letter that compels the recipient to provide a complete file copy without delay. The tone must remain assertive from the opening sentence, clearly identifying this as my final request.

Please weave in:
• A firm deadline for compliance, expressed in calendar days.
• Repeated emphasis on the urgent status of the matter.
• A requirement that any electronic production be sent through secure, encrypted means.
• A closing paragraph that notes potential consequences for non-compliance while reserving all of my legal rights.

Deliverables:
• Editable Microsoft Word document.
• Matching PDF ready for immediate dispatch.

Ensure the language is concise, direct, and legally sound so I can send it the moment I receive it.