Local preferences
Saved product identifiers remain in local browser storage until you remove them or clear site data.
Privacy policy.
The preview stores saved product identifiers in your browser. It does not require an account and does not send that saved list to a server.
Operational measurement
A production deployment may use limited, aggregated analytics to understand page performance and broken flows. The provider and retention period must be documented before launch.
Third-party destinations
Marketplace and agent sites have their own privacy practices. Leaving KAKOBUY SPREADSHEET means those destinations govern the information you provide there.