SPF Tree does not collect user data.

The extension has no server, no backend, no database and no account system. There is no analytics, telemetry, crash reporting, advertising or tracking of any kind.

The only outbound network requests are public DNS queries for the domain being audited, sent to cloudflare-dns.com and, if that fails, dns.google. Each request contains a domain name and a DNS record type and nothing else. These are the same queries any DNS client makes and reveal only the domain the user chose to audit.

The list of the last ten domains checked is stored on the user's own device using chrome.storage.local. It is never transmitted anywhere.

No remote code is loaded or executed. All scripts, styles and fonts are bundled inside the extension package.

No data is sold or transferred to third parties. No data is used for any purpose unrelated to the extension's single purpose, or to determine creditworthiness or for lending.

Contact: [email protected] Last updated: 19 August 2026