Live lookups against the real vendors. Nothing is mocked and nothing is cached, so every panel shows what the supplier said just now.
IPQualityScore phone validation: line type, carrier, whether the number is active, and its spam score.
Reputation of an email address — not of a message. IPQualityScore reads the address only: no headers, no body. Scam-scoring a full message is a separate job.
Paste the full source of an email — headers and body. In Gmail that is “Show original”; in Outlook, “View source”. Nothing is stored.