Smart Domain Check
Trusted by over 1 million users

Check links, emails, and domains with confidence

Free, privacy-focused tools to verify URLs, validate emails, and inspect domain configurations. No account required.

Start Checking Explore Tools

Safety Tools

Link safety checker

Check any URL for spam, phishing, and malware. See redirect chains and get a clear safe / suspicious / dangerous result before you click.

Bulk URL checker

Check up to 10 links at once. Paste a list of URLs and export results as CSV for reports or moderation.

Email validator

Verify email addresses: syntax, MX records, and flag disposable or role-based addresses so you can reduce bounce and spam signups.

URL unwrapper

Paste a short link (bit.ly, t.co, etc.) and see the full redirect chain and final destination without clicking.

Password strength checker

Check password strength in your browser. Nothing is sent to our servers—fully private.

Domain Inspection Tools

DNS lookup

Look up A, AAAA, MX, TXT, CNAME, and NS records for any domain. Useful for debugging email delivery and DNS configuration.

WHOIS lookup

Find domain registration details: registrar, creation and expiry dates, nameservers, and status codes.

HTTP header checker

View HTTP response headers for any URL. See security headers like CSP, HSTS, and X-Frame-Options at a glance.

SSL certificate checker

Check SSL/TLS certificate details, issuer, expiry date, and whether the connection is secure.

How it works

Paste a link, email, or domain into the tool you need. We validate input, follow redirects where applicable, query DNS records, and—for links—optionally check against Google Safe Browsing. You get a clear result and the reason behind it, so you can decide whether to trust it.

No account required. We don't store your submissions. Use the tools as often as you need, and share them with your team or community.

Who uses these tools

Used by teachers, IT teams, content moderators, and parents to stay safe online. We integrate with Google Safe Browsing when available.

IT & Security teams

Audit suspicious links, verify domain configurations, and check SSL certificates.

Marketers & email teams

Validate email lists, reduce bounce rates, and check email domain health.

Content moderators

Bulk-check user-submitted links and export results for moderation queues.

Developers

Debug DNS records, inspect HTTP headers, and verify SSL/TLS configurations.

Frequently asked questions

Is it free?

Yes. All tools are free to use with no account required. We check links using redirect resolution and, when configured, Google Safe Browsing so you can avoid phishing and malware.

Do you store the URLs or emails I check?

We do not log or store the specific URLs or email addresses you submit. Checks are processed in real time. See our Privacy page for details.

Why should I check a link before clicking?

Phishing and scam links often use short URLs or redirects to hide the real destination. Checking first shows you the final URL and whether it's reported as dangerous.

What does "suspicious" mean?

A link is marked suspicious when it uses HTTP instead of HTTPS, or when we couldn't fully resolve redirects. It doesn't mean it's malicious—just that you should be cautious.

What tools do you offer?

We offer 9 free tools: link safety checker, bulk URL checker, email validator, URL unwrapper, DNS lookup, WHOIS lookup, HTTP header checker, SSL certificate checker, and password strength checker.

Can I use these tools for my business?

Absolutely. Our tools are used by IT teams, content moderators, marketers, and developers to verify links, validate email lists, and audit domain configurations.