{"slug":"mail-halowerk-com-email-052907","title":"DNS and list based verification","host":"mail.halowerk.com","method":"POST","resource":"https://mail.halowerk.com/email","category":"other","description":"DNS and list based verification. Never claims that a mailbox exists without evidence: without an SMTP probe the verdict for a routable address is \"unknown\", not \"valid\".","price_listed":0.001,"price_asked":0.001,"state":"answering","state_label":"Answering","checks_7d":1,"answered_7d":1,"latency_ms_median":990,"reported_calls_30d":2,"reported_payers_30d":2,"networks":["eip155:8453"],"badge":"unverified","paid_checks_7d":0,"paid_ok_7d":0,"example_input":{"body":{"email":"name@example.com"},"bodyType":"json","method":"POST","type":"http"},"output_schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"additionalProperties":false,"properties":{"body":{"properties":{"email":{"description":"The email address to check.","type":"string"},"smtp_check":{"default":false,"description":"Ask for an optional SMTP probe. Off by default, heavily throttled, one attempt per target and never retried. Without it the verdict of a routable address stays \"unknown\".","type":"boolean"}},"required":["email"],"type":"object"},"bodyType":{"enum":["json","form-data","text"],"type":"string"},"method":{"enum":["POST"],"type":"string"},"type":{"const":"http","type":"string"}},"required":["type","method","bodyType","body"],"type":"object"}},"required":["input"],"type":"object"},"history":[{"day":"2026-09-24","reachable":true,"status":402,"valid_402":true,"asked_usdc":0.001,"price_match":true,"latency_ms":990,"error":null}],"description_full":"DNS and list based verification. Never claims that a mailbox exists without evidence: without an SMTP probe the verdict for a routable address is \"unknown\", not \"valid\".","last_updated":"2026-09-14T20:00:46.778Z","schemes":["exact"]}