Never Let an Expired SSL Take Your Site Offline
Statusly continuously checks your SSL certificates for expiration, misconfiguration, and broken trust chains — so your visitors always see a green padlock, not a browser warning.
Start Monitoring Free See How It WorksAn Expired Certificate Is a Silent Outage
When an SSL certificate expires, browsers block access with a full-page security warning. For an e-commerce store, that means zero conversions. For a SaaS dashboard, that means frustrated users and support tickets. Most teams discover the problem only after their customers report it.
Statusly monitors every certificate associated with your endpoints — primary domains, subdomains, and CDN aliases — on a schedule you choose. We check not just the expiry date but also the issuer, key strength, and protocol support. If anything drifts from a healthy state, you receive an alert via email, Slack, or Telegram before your users ever notice.
3,247 incidents prevented in 2024
Our customers avoided certificate-related outages across 14,800 monitored endpoints — from Shopify stores to internal API gateways.
Check every 5 minutes
On our Pro plan, SSL checks run every 5 minutes from three global locations: Frankfurt, Singapore, and Virginia. No blind spots.
Auto-renewal verification
We confirm that Let's Encrypt, AWS ACM, and Cloudflare auto-renewals actually succeeded — not just that they were scheduled.
Three-Tier Warning System
Statusly sends escalating alerts at 30, 14, and 7 days before a certificate expires. Each alert includes the exact expiry timestamp, the affected domain, and a one-click link to your certificate management console.
30 days — Advisory
A gentle email or Slack ping: "shop.acmestore.io expires on 2025-08-12". Your DevOps team gets a heads-up to schedule renewal during normal business hours.
14 days — Warning
A higher-priority notification with a checklist: verify DNS propagation, test the renewal command, and confirm the new certificate chains correctly. Includes the certificate fingerprint for audit logs.
7 days — Critical
An urgent alert via all configured channels — email, Slack, Telegram, and optional SMS. If the certificate still hasn't been renewed, Statusly continues checking hourly and pages your on-call engineer through your PagerDuty integration.
Full Trust Chain Verification
A certificate can be valid and unexpired but still fail in browsers if the intermediate chain is incomplete or misordered. Statusly walks the entire chain from your leaf certificate to the root CA, verifying every intermediate issuer along the way.
We detect common chain problems that slip through automated provisioning tools: missing intermediate certificates, cross-signed chain breaks, and hostname mismatches between the leaf and the issuing intermediate. When a chain issue is found, the alert includes the exact point of failure — for example, "Intermediate 'DigiCert SHA2 Extended Validation Server CA' not served by api.example.com" — so your team can fix the server configuration precisely.
OCSP & CRL stapling
We verify that your server staples OCSP responses correctly and that the status matches the CRL. Stale or missing stapling triggers a warning before it becomes a client-side delay.
SAN coverage check
Statusly confirms that every hostname you monitor is listed in the certificate's Subject Alternative Names. Wildcard mismatches and forgotten subdomains are flagged immediately.
Protocol & cipher audit
We test TLS 1.2 and TLS 1.3 support, flag deprecated ciphers like RC4 and 3DES, and ensure HSTS headers are present with a minimum max-age of 31536000 seconds.
Ready to Protect Your Endpoints?
Add SSL monitoring to any of your existing uptime checks at no extra cost, or create dedicated SSL monitors for domains that don't need uptime pinging. Start with 10 free checks — no credit card required.
Create Your Free Account Read the SSL Docs