Show HN: Free Email Validator – Verify emails in the browser (no signup)

[slonik]

Hi HN – Kristyna here.

I built this free, online email validator and would love to share it with you.

What it checks:

- Syntax – Confirms correct proper email format. - Domain & DNS – Verifies the domain exists and resolves. - MX records – Verifies the domain can receive mail. - SMTP handshake (optional) – Checks the mail server accepts the recipient (no message is sent). - Disposable domains – Flags temporary inbox providers that can hurt deliverability lists. - Common typos – Catches mistakes and suggests fixes.

How it works:

Paste an email > click Validate > get a clear result with reasons. You can copy the result and validate more if you'd like.

I built it because most validators hide behind signups or credits. I wanted a no-signup, in-browser checker you can use fast. It’s free and online.

Thank you for taking a look. Let me know what do you think!