Uplance Monitor types Certificate
Monitor SSL certificate expiry
Every HTTP monitor tracks its certificate automatically. There is nothing to configure and nothing to remember.
Free for 10 monitors · no credit card
The problem
Certificate expiry is the most predictable outage there is. It is scheduled, months in advance, in writing — and it still takes sites down every single day.
Renewal automation fails quietly: a hook that stopped firing, a DNS challenge that broke, a renewal that ran but never reloaded the server.
What the check looks at
Days remaining
Certificates are re-checked every 12 hours, with alerts 14, 7 and 1 days out.
The served chain
What your server actually sends — which is how you catch a renewal that succeeded but was never loaded.
Domain registration
Checked over RDAP every 24 hours, with alerts 30, 7 and 1 days before the domain itself expires.
Unexpected issuance
Certificate Transparency logs are watched, so a certificate issued for your domain that you didn't request raises an alert.
And the alert actually arrives
Most monitoring tools are fine until the one time the alert doesn't arrive. Uplance is built so that can't happen quietly.
- Every alert is written to an outbox before it is sent, and retried for about fifty minutes. A restart doesn't lose it.
- Once a week, a real test event is sent through every channel you've configured, and you're told which ones failed.
- If the alert pipeline is in trouble, the dashboard says so — it isn't buried in a log file.
- If the checker itself stops, the health endpoint returns 503 so an outside heartbeat can page you, and your status page says monitoring has stopped instead of showing stale green.
Common questions
- I use Let's Encrypt with auto-renewal. Do I need this?
- Especially then. Auto-renewal is exactly the kind of thing that fails silently — the timer is disabled, the hook stops firing, the new certificate is issued but never loaded. Uplance checks what your server serves, not what your renewal tool believes.
- What is the Certificate Transparency alert for?
- It tells you when a certificate is issued for your domain. Usually that's your own renewal. When it isn't, you want to know within hours, not at the next audit.
- Does it cost extra?
- No. Certificate and domain tracking come with every HTTP monitor, including on the free plan.
Also monitored
Know it's down before your customers do.
10 monitors, 30 days of history, no credit card