Expiration
Every certificate across all your domains, with its expiry date, in one place. CertKit alerts you as each one approaches expiration, with enough lead time to act.
SSL certificate monitoring
Never get burned by an expiry.
SSL certificate monitoring tracks the state of every certificate you run in real time, and alerts you before one expires. It is how a missed renewal stops being a 2am outage and becomes a notice you act on with time to spare.
An expired certificate is an outage
When a certificate expires, the service it protects stops working. Browsers throw a full page warning, APIs reject the connection, and integrations fail. There is no slow degradation, it just breaks, all at once, for everyone.
The worst part is how you find out. Without monitoring, the first signal is usually a customer complaint or a support ticket, long after the certificate lapsed. Monitoring flips that around: you hear about the problem from CertKit, before anyone outside your team does.
What CertKit monitors
Monitoring is more than a countdown to an expiry date. CertKit watches every certificate for the things that quietly break trust:
Renewal failures
Automation can fail quietly: a validation breaks, a deploy doesn't land. CertKit tells you the moment a renewal doesn't go through, while there is still time to fix it.
The wrong certificate
A renewal isn't done until the new certificate is actually being served. CertKit checks the live TLS handshake and confirms the right certificate is in place, not an old or mismatched one.
Chain of trust
A certificate is only trusted if its root and intermediate are too. If one is revoked or removed from browser trust stores, CertKit detects it and warns you that your certificate may no longer be trusted by browsers, even though it hasn't expired.
Alerts before an outage, not after
The point of certificate expiration monitoring is the lead time. CertKit checks your certificates continuously and alerts you well before an expiry, so a renewal is something you handle on a normal workday, not a fire you fight after a site is already down.
issued CertKit alerts expiry
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before the outage, not after
Continuous checks mean you act on a notice, not on a customer complaint.
CertKit also verifies each renewal after it happens, confirming the new certificate is the one actually being served. More on verifying certificate renewal.
Monitoring tells you. Automation fixes it.
An SSL certificate monitoring tool is the right place to start: it stops surprises and costs you nothing in risk. But a monitoring tool only tells you a certificate is about to expire. Someone still has to renew and redeploy it. The next step is automating the renewal, so the fix happens on its own and monitoring is just there to confirm it worked.
Together, discovery, automation, and monitoring are certificate lifecycle management. CertKit finds every certificate you have, renews and deploys it automatically, and monitors every one so nothing slips through.
CertKit makes what many companies struggle with much easier to manage while at the same time providing great value compared to the traditional vendors in the space.
Ben Story, Managed Services Director, RedEye Network Solutions
Frequently asked questions
What does CertKit monitor?
Expiration dates on every certificate across your domains, whether each renewal succeeds, whether the right certificate is actually being served on the live endpoint, and whether its chain of trust is still valid. If any of those is off, you get an alert.
How will I be alerted before a certificate expires?
CertKit checks your certificates continuously and alerts you ahead of each expiry, and again if an automated renewal fails. The lead time is the point, so you act before an outage rather than after one.
Does monitoring confirm the right certificate is being served?
Yes. CertKit checks the live TLS handshake after each renewal and confirms the new certificate is the one actually in place, not an old or mismatched one left behind by a half-finished deploy.
Can I monitor certificates CertKit didn't issue?
Yes. Monitoring works on any public endpoint, so you can watch certificates you got elsewhere, not only the ones CertKit manages. It is a good way to get visibility before you automate anything.
How do I get started?
Start a 90-day free trial, no credit card required. Add your domains and CertKit begins monitoring expiration and renewal status right away. Our engineering team helps you set up.
Stop watching expiry dates by hand
Free 90-day trial. No credit card required. Direct access to our engineering team to get you set up.