Stop Expired Certificates From Breaking Trust and Traffic
An expired SSL certificate triggers browser warnings that scare away visitors and tank your SEO rankings. CronJobPro checks your certificates on schedule and alerts you weeks before expiry so renewal never slips through the cracks.
Expired Certificates Destroy User Trust Instantly
When an SSL certificate expires, browsers display a frightening warning page. Visitors leave immediately, search rankings drop, and automated systems that depend on your HTTPS endpoints start failing.
- ✗Auto-renewal fails silently and you only discover it when Chrome shows a security warning
- ✗Managing certificates across dozens of domains and subdomains is error-prone without automation
- ✗Wildcard and multi-domain certificates have different expiry dates that are hard to track manually
- ✗Third-party services you depend on let their certificates expire, breaking your integrations
Automated Certificate Checks With Early Warning Alerts
Point CronJobPro at your HTTPS endpoints and it checks certificate validity on a daily schedule. When a certificate is approaching expiry, you receive alerts across all your channels with enough lead time to renew.
Multi-Channel Alerts
Receive SSL expiry warnings via email, Slack, and Discord — ensuring the right person sees the alert regardless of their communication preference.
Execution Logs
Every certificate check logs the issuer, expiry date, and days remaining so you have a complete audit trail of your SSL health.
Timezone Support
Schedule certificate checks in your operational timezone so alerts arrive during business hours when your team can act on them.
How to Set It Up
- 1
Create a cron job for each domain you need to monitor
Add your HTTPS URLs as endpoints. CronJobPro will connect and inspect the SSL certificate presented by the server.
- 2
Set daily check frequency
SSL certificates change infrequently, so a daily check is sufficient. Schedule it during business hours in your timezone for actionable alerts.
- 3
Configure early warning thresholds
Set your monitoring endpoint to return an error when the certificate has fewer than 30 days remaining, giving your team ample time to renew.
- 4
Add your DevOps team to the alert channels
Connect Slack and email so that both the infrastructure team and management are aware of upcoming certificate renewals.
Recommended Schedules
Start Automating Now
Set up ssl certificate expiry monitoring in under 2 minutes. Free forever for up to 5 jobs.
Frequently Asked Questions
How far in advance should I be warned about certificate expiry?
We recommend a 30-day warning threshold. This gives your team enough time to troubleshoot auto-renewal issues and manually renew if needed.
Can CronJobPro automatically renew my SSL certificates?
CronJobPro monitors and alerts — it does not renew certificates directly. However, you can trigger a renewal webhook endpoint when a certificate approaches expiry.
Does this work with Let's Encrypt auto-renewed certificates?
Absolutely. Even with auto-renewal configured, monitoring provides a safety net. If certbot or your ACME client fails silently, CronJobPro catches it.
Can I monitor certificates on third-party services I don't control?
Yes. CronJobPro checks the certificate presented by any public HTTPS endpoint, whether you own the server or not. Great for monitoring SaaS providers you depend on.
Related Use Cases
Website Uptime Monitoring
CronJobPro pings your website on a schedule you define and alerts your team the moment something goes wrong. With automatic retries and multi-channel notifications, you catch outages before they cost you customers.
API Health Check Monitoring
Your application depends on APIs — yours and third-party ones. CronJobPro monitors every endpoint on a schedule, verifies response integrity, and alerts you the moment something drifts from expected behavior.