Skip to content

Capability

SSL monitoring that emails you weeks before the browser warning ever shows.

Most certificate renewals fail silently. The host thinks it renewed; the cert path says otherwise. SiteGuardian probes the cert path daily and emails you at 90, 30, 7, and 1 day out from expiry, so the renewal has time to happen before the browser bar turns red.

What this tool does in one sentence
SiteGuardian reads the certificate path the way a browser does and emails you at 90, 30, 7, and 1 day out from expiry, so the silent auto-renew failure is caught weeks before the browser bar turns red.
Best for
Any site with HTTPS where the host dashboard said "renewed" but the cert path says otherwise — the silent Let’s Encrypt / DigiCert / Sectigo / ZeroSSL failure that costs you a Tuesday-morning browser warning.
Compared to
A standalone expiry checker you ran once — SiteGuardian watches the cert path daily and gives you four chances to renew before a visitor ever sees the warning.
See plans

SSL monitoring in depth

  • What it is

    A cert-path probe on a daily cadence

    1. SiteGuardian opens the HTTPS connection the way a browser would, reads the certificate chain, and stores the expiry date.
    2. Every day, the connection is re-checked. You do not get spammed — only the alert cadence when an expiry threshold fires.
    3. No agent on your server. The probe runs from the outside, just like a customer’s browser.

  • Why small businesses run it

    Caught weeks before a customer ever sees red

    1. Auto-renew failures are silent: the host dashboard says "renewed," the cert path disagrees.
    2. By the time a visitor sees the browser warning bar, you have already had a 90-day, 30-day, 7-day, and 1-day email.
    3. Enough time for a registrar-level renewal or a CA migration to actually take — before the warning page renders.

  • What the alert email looks like

    One line per stage, four chances to act

    1. At 90 days out: "Your certificate for https://example.com expires on 2026-09-14. 90 days from today."
    2. At 30 days out: the same line, with a louder subject — and reminder to renew now.
    3. At 7 and 1 day out: short, dated, and actionable. No login flow; the email is the action surface.

Related capabilities

Related capabilities.

Keep exploring

Pages small-business owners read next.