I sell intangible electronic products such as software and database via PayPal. The problem is this is very hard to protect against fraud / unauthorized payments, because there's nothing I can do to protect myself - no third party shipment proof at all.
What would you usually do / provide when disputing such a case for a totally electronic sale? For example, without shipment proof from third parties, we are stuck with email communications - but most of the time, a fraud buyer would not respond to your emails, let alone contacting you in the first place.
Internal access logs wouldn't count as third party thus not useful, not to mention PayPal doesn't disclose the IP and computer signature of the buyer.
Any tips for a better chance of winning?