Is FRDDB a public blacklist?
No. It is an API for authenticated SaaS organizations. The response is a risk decision surface, not a public wall of shame.
Can only paid customers report?
Yes. That is the right default. Lookups can have separate plans, but report creation should stay behind a paid organization entitlement.
Do you store raw emails?
Not by default. Emails are normalized and stored as a peppered HMAC identity. Report notes are encrypted.
Why no numeric version in the API path?
The public API stays clean. Breaking behavior is controlled with the FRDDB-Version request header.
What should a SaaS app do with a high score?
Usually step-up verification, manual review, usage limits, or delayed fulfillment. Auto-ban should be rare because false positives are expensive.
What keeps bad reports from hurting real customers?
Paid reporting, audit trails, reporter trust, evidence requirements, retractions, and outcome feedback. That is the whole game.