Show HN: Open-Source Email Verifier (github.com)

got tired of paying for email verification saas like usebouncer.com, expensive at scale and often say emails are valid when the server sends accept to anything.

built a simple npm package that does format + dns + smtp checks, plus detects those catch-all domains.

  npx email-verifier-check check user@example.com
  https://github.com/yolodex-ai/email-verifier

any feedback appreciated.