Secure delivery is a balance: strong protection with zero friction. The best approach is private storage with expiring download links.

Give buyers a link that works immediately, then naturally expires after a short window. It is enough to protect your files without creating support tickets.

Keep a resend flow available. When someone misplaces their link, a quick email reset feels helpful and human.

Security should feel invisible. When the system works, customers simply get what they bought and move on happily.