Docs · Commands
/remind <domain> <days>
The core Certimon command. Tell the bot a domain and how many days before expiry you want to be warned. From then on, Certimon checks the certificate hourly and pings you when the window opens.
What it does
/remind adds a (domain, days) pair to your watched list. Once set, Certimon refreshes the live SSL certificate roughly every hour. When the time-to-expiry drops below your chosen number of days, you get a Telegram message in the chat with the bot.
You can stack as many windows on the same domain as you want — typical setups use 30, 7 and 1 days so you get an early warning, a follow-up, and a last-chance ping.
Syntax
Examples — single windows:
Stacking multiple windows on one domain (recommended for production sites):
Each pair is independent — you can mix and match different windows for different domains.
Recommended setups
Side projects
Single 30-day reminder. Plenty of time to react and you're not actively on-call.
Client & production sites
Two windows so you can renew calmly the first time and still get a follow-up.
Critical infrastructure
Three windows. Final 1-day ping is your "drop everything" alert.
Removing a reminder
If you no longer want a particular reminder, use /delete with the same domain and day count:
Only the matching (domain, days) pair is removed; other reminders for the same domain stay active. Use /domains first if you're not sure which windows you set.
How the alert looks
Once the renewed certificate is detected on the next hourly check, you stop receiving alerts for that window automatically. There's no "acknowledge" button to chase.
Common questions
Is there a per-domain limit?
No. Certimon is free for unlimited domains and unlimited reminder windows per account. Add as many as you need.
How often does Certimon re-check the certificate?
Roughly once per hour. That's the cadence used to refresh expiry data and decide whether to send a window alert.
Can I monitor a non-standard HTTPS port?
Yes — append :port to the domain. Example: /remind example.com:8443 30.
Does Certimon also renew the certificate?
No — it's purely a monitor. Keep your existing renewal automation (Let's Encrypt + certbot, Caddy, cert-manager, Cloudflare) and use Certimon as the independent alert layer.
What happens if the cert renews before the window?
Nothing. Certimon sees a fresh expiry on the next hourly check and silently moves on. You only hear from it when there's something to do.