Email Validator

This tool focuses on the core domain logic needed to assess email addresses for use in forms, campaigns, and data pipelines. It validates syntax against RFC 5322, normalizes domains, and performs DNS MX lookups to ensure the domain can receive mail. A deliverability score combines multiple signals, offering a practical estimate of downstream reliability. It is designed for developers integrating address validation in sign-up flows, marketing automation, or dataset cleansing. Users benefit from early error detection, reduced bounce rates, and improved mailing list quality. Unique value comes from combining syntax, DNS, and lightweight deliverability checks in a single, developer-friendly API. Core features include automatic IDN handling, disposable email detection, and optional mailbox heuristic indicators when permitted by the hosting environment. Use cases cover real-time form validation, bulk list hygiene, and pre-submit checks in onboarding pipelines. The tool emphasizes transparency of checks and outputs, enabling integration with server-side validation logic and downstream analytics. Deliverability signals help prioritize remediation efforts and guide user feedback to ensure higher engagement and sender reputation.