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Certimon docs

Everything you need to monitor SSL certificates with Certimon — from your first /check to managing dozens of domains in the web dashboard.

Open @CertimonBot Open web dashboard

Free • Unlimited domains • No signup, no credit card

What is Certimon?

Certimon is a free SSL certificate monitoring service. You tell it which domains to watch and how many days before expiry you want a heads-up; it checks the live HTTPS certificates and pings you on Telegram before any of them are about to expire.

There is no signup, no credit card and no per-domain pricing. You can drive everything from the @CertimonBot Telegram chat using a few short commands, or from the web dashboard if you prefer a visual list.

These docs cover the three commands most people use — /check, /remind and /domains — plus how to use the web dashboard for the same tasks.

Documentation pages

/check command

Look up the SSL certificate for any domain right now. See the issuer, expiry date, days remaining, and any common errors explained in plain English.

/remind command

Set a Telegram reminder before a certificate expires. Choose any number of days, stack multiple windows, or remove a reminder you no longer need.

/domains command

See every domain you're watching, its expiry date, how many days are left, and which reminder windows are active — all in one Telegram message.

Web dashboard

Add and manage domains in a browser at app.certimon.com. Same data as the Telegram bot, in a sortable list with status badges and one-click delete.

Get started in 30 seconds

  1. 1. Open @CertimonBot on Telegram and tap Start.
  2. 2. Send /check yourdomain.com to see the current certificate.
  3. 3. Send /remind yourdomain.com 30 to get pinged 30 days before expiry.
  4. 4. Repeat for every domain you care about. Use /domains any time to see the list.

Building an integration? See the SSL certificate monitoring API page for webhook payloads (Microsoft Teams, PagerDuty, Telegram) and the planned REST endpoint shape.

Ready to set up your first reminder?

Open Telegram, send /remind yourdomain.com 30, and you're done.

Open @CertimonBot