What is email reputation?
Email reputation is enrichment on the email address of a signup or login—disposable domain, age, and whether the address was previously tied to abuse—so fraud rules can raise scrutiny without treating every new inbox as fraud.
Where it helps
Promo farms and mule onboarding often use throwaway inboxes. Product copy describes email enrichment on events. Pair a disposable-domain signal with device linking and signup velocity.
Where it fails
Privacy relays, corporate catch-alls, and new-but-real customers look “risky.” Default to REVIEW. Do not BLOCK every plus-address or every .edu.
How Naiza applies it
Send the email on registration and login events. Combine enrichment with fingerprints and lists. Confirm current email fields in docs rather than assuming a full email-intelligence product.
Frequently asked questions
Short answers written so search and answer engines can cite them.
What is an email reputation API?
It returns risk attributes for an email so signup rules can treat disposable or previously abusive addresses differently from typical consumer inboxes.
Should we decline disposable emails automatically?
Only if policy says so. Many teams REVIEW first, then list confirmed-abusive domains. A disposable inbox alone is not money laundering.
Is email reputation the same as KYC?
No. KYC verifies legal identity. Email reputation is a fraud-network signal on the identifier the user typed.