An open postal code registry with country datasets you can download (CSV/Excel/JSON) plus an API foundation for address validation. Standardized, WGS84-geocoded coverage across 190+ countries

Kaiju Email Verifier is a privacy-first email verification tool to clean your lists, cut bounces and protect deliverability. Upload a CSV/XLSX or check single emails, get instant valid/invalid flags and export-ready results. Free during beta, with a simple API for developers and agencies that want real-time, accurate checks.

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