Skip to main content
SSL monitors track your certificate expiration dates and alert you before they expire, preventing embarrassing and costly outages.

​
Why Monitor SSL Certificates?

  • Expired certificates cause browser warnings and lost trust
  • Many services reject connections to expired certificates
  • Auto-renewal can fail silently
  • Monitoring gives you time to fix issues

​
Creating an SSL Monitor

  1. Go to Dashboard > SSL
  2. Click Add Domain
  3. Enter the domain to monitor
  4. Set alert threshold (days before expiry)

​
What We Check

CheckDescription
Expiration dateDays until certificate expires
Certificate chainAll certificates in the chain are valid
Domain matchCertificate matches the domain
IssuerCertificate authority information

​
Alert Thresholds

Configure when to receive alerts:
Days Before ExpiryRecommended For
30 daysStandard alert
14 daysUrgent reminder
7 daysCritical warning

​
Certificate Details

For each monitored domain, we track: 
{
  "domain": "example.com",
  "expires_at": "2024-06-15T00:00:00Z",
  "days_until_expiry": 45,
  "issuer": "Let's Encrypt",
  "subject": "CN=example.com",
  "valid_from": "2024-03-15T00:00:00Z"
}

​
Best Practices

Include subdomains, API endpoints, and any domain serving HTTPS traffic.
Alert at 30 days for awareness, 14 days for action, 7 days for escalation.
If you use *.example.com, monitor the base domain.
Even with Let’s Encrypt or similar, certificates can fail to renew.