Free
$0 forever
- 2 domains
- All five checks, once a day
- Email alerts and daily summary
Five checks that catch what quietly breaks.
Each one runs on a schedule from our servers. Nothing to install on yours.
SSL certificates
Expiry, the full chain, hostname coverage and TLS version, checked against what your server actually sends. Warnings scale with each certificate's lifetime, so normal Let's Encrypt renewals don't cry wolf.
Domain renewals
The expiry date straight from the registry, plus registrar and status. Alerts at 30 days and 7 days, and right away if a domain goes on hold or into redemption.
DNS changes
Nameservers, web and mail records are compared on every check. A nameserver change is flagged as critical, because it can mean someone has taken control of your domain.
Email authentication
SPF (including the 10-lookup limit that silently breaks it), DKIM keys and your DMARC policy: the settings Gmail and Yahoo now require from bulk senders.
Blocklists
Your domain and mail servers checked against major spam blocklists. A list that won't answer is reported as "not checked", never as clean.
One grade per domain
All five checks roll up into an A–F grade, with your worst domains listed first, so you know where to look.
Alerts that say what to do.
- Critical? Email within minutes.
An expiring certificate, a lapsed domain or a nameserver change reaches your inbox right away.
- Warnings? One daily summary.
Sent at the hour you choose, in your own time zone. No alert storms.
- Fixed? It closes itself.
The next check confirms the fix and the issue disappears from your list.
CriticalDNS
DNS records for yourshop.com changed. NS: ns1.yourhost.com, ns2.yourhost.com → ns1.unknown-dns.net, ns2.unknown-dns.net
How to fix: Nameserver changes move control of the whole domain. If you did not make this change, contact your registrar immediately and change your registrar password.
Simple pricing
Start free. Upgrade when you need more domains or faster checks.
Starter
$9 / month$90 / year
Save $18 a year
- 10 domains
- SSL and DNS checked hourly
- Email setup and blocklists every 6 hours
- Renewals checked twice a day
Pro
Recommended$29 / month$290 / year
Save $58 a year
- 50 domains
- DNS checked every 30 minutes
- Everything in Starter
Agency
$79 / month$790 / year
Save $158 a year
- 200 domains
- Built for client portfolios
- Everything in Pro
Prices in USD. Every account starts on Free; choose a paid plan from the Billing page in your account. Pay by card through Stripe. Cancel anytime: your plan stays until the end of the period you paid for, then moves to Free. See our refund policy.
Questions
Do I need to install anything?
No. Domain Health checks from the outside, using public DNS, certificates and registry data. Add a domain name and the first results appear within minutes.
Can you see my email or website data?
No. We only look at public information: your DNS records, the certificate your server presents, and the registry’s record for your domain.
What counts as a domain?
Each name you add, such as example.com, counts as one. A subdomain like shop.example.com is a separate entry if you want it watched on its own.
How do paid plans work?
Start on the Free plan, then upgrade from the Billing page in your account whenever you need more domains or faster checks. You can switch plans at any time.
What happens if I cancel?
Your paid plan stays active until the end of the period you paid for, then your account moves to Free. If you have more domains than Free allows, the extra ones are paused, not deleted.
How do I pay?
By card, through Stripe. Your card details go straight to Stripe; we never see or store them. Invoices are available in your account.
Your first report takes two minutes.
Add a domain, and see its SSL, renewal, DNS and email status with fixes for anything wrong.