Powerful free tools to audit your email deliverability, check DNS records, and look up domain registration data — all in seconds, no account required.
Built by the ASP OL Media deliverability team to help you diagnose problems fast and fix them before they hurt your inbox placement.
Check every DNS record that matters for email deliverability — SPF, DKIM, DMARC, MX, A, NS, CNAME, and TXT — with an instant deliverability score.
Instantly retrieve domain owner, registrar, registration and expiry dates, nameservers, domain age, DNSSEC status, and domain status codes.
Poor DNS setup is the single biggest reason emails land in spam. These tools help you find and fix problems before they damage your sender reputation.
Enter any domain and get a complete picture of its DNS health in under 5 seconds — no waiting, no delays, no account creation.
Every result is colour-coded and explained in plain English. You'll know exactly what's missing, what it means, and why it matters for inbox placement.
Use the results to fix issues yourself, or share them with our deliverability team. We offer free consultations for any domain with a score below 70.
Check any domain — not just yours. See how competitors have configured their email authentication, nameservers, and domain registrations.
Buying or evaluating a domain? Check its age, registrar history, expiry date, DNS health, and any suspicious status codes before you commit.
No limits, no sign-up, no premium tier. These tools are free because helping businesses understand email deliverability is core to what we do.
From solo founders to enterprise IT teams — if email matters to your business, these tools matter too.
Verify SPF, DKIM, and DMARC before every campaign launch to protect sender reputation and ensure inbox placement.
Confirm DNS propagation after changes, verify record values, debug mail server configuration issues quickly.
Check if your domain is properly set up for email, verify competitors, and make sure your domain doesn't expire unexpectedly.
Audit domain configurations, check for missing DMARC policies that leave domains vulnerable to spoofing and phishing.
Check domain age, registration history, expiry dates, and registrar details before purchasing or evaluating domains.
Audit client domains as part of onboarding, present clear DNS health reports, and track improvements over time.
Explore how DNS actually works in practice — look up real records for real domains and see exactly what each one does.
Verify domain ownership, check registration dates, and research who is behind a website or email address.
We're building more free tools to help you master email deliverability and domain management.
Paste raw email headers and get a full breakdown of routing, authentication results, spam scores, and delivery path.
Coming SoonCheck if your domain or IP is listed on major email blacklists like Spamhaus, Barracuda, MXToolbox, and 50+ others.
Coming SoonSend a test email and get a detailed spam score report — subject line, content, links, sender reputation, and more.
Coming SoonCheck the sending reputation of any IP address across major anti-spam databases and reputation networks.
Coming SoonEverything about our free tools. For questions about our email marketing services, contact us here.
Yes — 100% free with no hidden charges, no premium tier, and no account required. DNS Watch and Whois Lookup are provided by ASP OL Media as a free resource for the email marketing and web community. There are no usage limits either — look up as many domains as you need.
No account required. Just visit the tool page, enter a domain name, and get results instantly. We don't collect your email, store your search history, or track what domains you look up.
DNS Watch performs live DNS queries every time you run a lookup — it does not use cached results. This means the data reflects the current state of DNS propagation at the moment of your query. For Whois Lookup, data is fetched live from RDAP registry servers, which are the authoritative source for domain registration information. Both tools are as accurate as the underlying registry data allows.
First, note which records are failing (SPF, DKIM, DMARC are the most critical for email). Then log in to your domain's DNS management panel (usually at your domain registrar or hosting provider) and add or fix the missing records. If you're not sure how to fix them, our team offers a free 30-minute deliverability consultation — contact us here.
Yes — DNS records and Whois data are publicly available information. You can look up any domain — your own, a competitor's, or any domain you're researching. This is the same data available through any public DNS resolver or WHOIS service.
The deliverability score shown by DNS Watch is a score out of 100 based on the presence and validity of five key DNS records: A record (10 pts), MX records (20 pts), SPF (30 pts), DMARC (25 pts), and DKIM (15 pts). SPF and DMARC carry the most weight because they have the biggest impact on whether receiving mail servers accept or reject your emails. A score of 90+ means your domain is well configured for email deliverability.