Monitor SSL, domain and load time
Updated July 21, 2026 · 4 min read
Beyond plain availability, Clesk Uptime warns about three creeping problems: an expiring certificate, an expiring domain and a response time well above your normal baseline.
SSL certificate expiry
For websites with https, Clesk Uptime checks the certificate daily and warns in stages 30, 14, 7 and 1 day before expiry, and if it does expire, at expiry itself and on recovery.
Because many certificates renew automatically and warnings would then be just noise, the SSL warning is off by default. You enable it per monitor via the notifications.
Domain expiry
The domain check queries the registry once a day and warns with the same stages from 30 down to 1 day before expiry. This warning is on by default.
Careful
Not every country code publishes an expiry date. For .de domains (DENIC), for example, there is none, so no expiry warning is possible.
Warning on slow load time
The load-time warning triggers when the response time is well above your own 7-day baseline. You pick the threshold as a factor: 2x, 3x (recommended) or 5x slower than normal. A fixed lower bound prevents false alarms on very fast sites. The warning is available on every plan and off by default.
How to enable the warnings
SSL, domain and load time have no dedicated page. You turn them on or off per monitor via the notifications on its detail page. See the notifications guide for the exact steps.
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