SSL Certificate Expiration Monitoring
Know exactly when every site's SSL certificate expires — and get a plain-language heads-up well before it does. One dashboard for every certificate, across every host.
Free for 5 domains. No card to start.
- www.northwind.co Secure
- shop.northwind.co Expires in 7 days
- acme.io Domain expires in 21 days
- blog.acme.com Expired
- legacy.acme.com Can't check
One expired certificate is all it takes
Certificates now last months, not years, and they're scattered across hosts and providers. Miss one renewal and visitors hit a red "not secure" warning. SSLCanary watches every certificate for you and warns you early, so that never happens.
SSL monitoring in three steps
- 1
Add your sites
Paste your hostnames or import a CSV, Excel, or Google Sheet. Every endpoint is validated and de-duplicated, then queued for its first certificate check.
- 2
Set lead times and channels
Pick when to be warned — 30, 14, 7, and 1 day before expiry by default — and where: email, Slack, Teams, Discord, Telegram, or a webhook.
- 3
Get warned early
We re-check each SSL certificate about every 12 hours and send an expiry alert at every lead time, so you renew long before a certificate lapses.
Why SSL certificate monitoring matters
SSL certificate monitoring is the practice of tracking when each of your HTTPS certificates expires and whether it is trusted right now, then alerting you in time to renew. Because TLS certificates now last months rather than years and often auto-renew, a single failed renewal is easy to miss — and the result is an expired SSL certificate serving a red "not secure" warning to every visitor. Early expiry alerts turn that silent failure into a routine task you handle days ahead.
The hard part is scale: certificates live across many hosts, load balancers, and providers, each with its own renewal quirks. An SSL certificate expiration checker that watches only one account leaves gaps. SSLCanary is a certificate expiration tracker for all of them at once — monitor HTTPS and TLS certificate expiry across every domain you own, get an SSL certificate renewal reminder at each lead time, and complement your certificate authority's own notices instead of relying on them alone.
What SSL monitoring should do
Expiry alerts, on your schedule
Get notified before an SSL certificate expires — at the lead times you choose, not a fixed default.
Is it valid right now
See plain-English status: valid, expiring, expired, not-yet-valid, untrusted, wrong hostname, or broken chain.
Every host, one list
Monitor SSL certificates across multiple hosts, registrars, and certificate authorities in one sortable dashboard.
Alerts where you work
Email, Slack, Teams, Discord, Telegram, or webhook — every notification logged with per-channel delivery status.
Built for many certificates
When you manage dozens or hundreds of certificates, spreadsheets and calendar reminders quietly fail. SSLCanary is built to track every SSL certificate's expiration date at once, sorted by whichever is due to expire soonest, so the next renewal is always at the top.
- Group certificates by client or project
- Sorted by soonest expiry, always
- A distinct alert when a site can't be checked
- checkout.example.com7d
- mail.example.com19d
- shop.example.com74d
Common questions
- What is SSL certificate monitoring?
- SSL certificate monitoring means continuously tracking when each of your sites' SSL/TLS certificates expire and whether they're valid right now, so you can renew before visitors ever see a security warning.
- How do I get alerts before a certificate expires?
- Add your domains and choose your lead times — 30, 14, 7, and 1 day by default — and your channels: email, Slack, Teams, Discord, Telegram, or a webhook. SSLCanary checks each certificate on a schedule and warns you ahead of every deadline.
- Can I monitor certificates across different hosts and registrars?
- Yes. SSLCanary checks each site over the public internet, so it doesn't matter which host or certificate authority issued the certificate — every domain you add appears in one list.
- How is this different from my certificate authority's reminder?
- A certificate authority only reminds you about certificates it issued. SSLCanary watches every certificate across every provider in one place, and also tracks your domain-name renewals — so nothing slips through a gap between accounts.
- Is SSL certificate monitoring free?
- Yes — up to 5 domains free, with no card to start. Paid plans scale to 25, 100, 500, or 1000 domains for teams and agencies.
Related solutions
See all your domains in one place.
Add your sites, choose your alerts, and let SSLCanary watch every certificate and domain for you.
Free for 5 domains. No card to start.