An expired certificate shows visitors a full-page security warning. Upzilla watches your certificates, including mail and other STARTTLS services, and warns you well before they expire.
Automatic renewal fails more often than people expect: a changed DNS record, a broken cron job, a forgotten wildcard. The first sign is usually a customer seeing “Your connection is not private”.
A certificate monitor checks expiry on a schedule and alerts you a configurable number of days ahead, giving you time to fix renewal calmly instead of during an outage.
Certificate monitoring is a low-frequency check by design: daily is plenty for most sites.
Set how many days before expiry you want to be warned.
Check SSL, SMTP, POP3, IMAP, FTP (STARTTLS), XMPP, IRC and LDAP (STARTTLS).
Monitor certificates on non-standard ports.
See what different networks receive.
From sign-up to your first alert in a few minutes.
Website, mail server or any TLS service.
Choose how early you want the warning.
Upzilla checks on schedule and alerts if renewal is at risk.
Sensible defaults get you started; every option below can be tuned per monitor.
| Setting | What it does |
|---|---|
| Domain / IP | The host presenting the certificate. |
| Port | Port for the certificate check. |
| Before expire | How many days before expiry to alert you. |
| Protocol | SSL, SMTP (STARTTLS), POP3 (STARTTLS), IMAP (STARTTLS), FTP (STARTTLS), XMPP, IRC or LDAP (STARTTLS). |
| Frequency | How often the check runs: every 30 minutes to every 24 hours. |
| Locations | Run the check from one or several of 9 locations: Spain, France, United Kingdom, USA (New York, Los Angeles), Australia, Singapore, Japan and Germany. |
| Notifications | Pick any of your pre-configured alert channels: e-mail, SMS, Telegram, Slack, Messenger, voice call, webhooks and more. |
| Status page | Make the statistics of this monitor public or private. |
| Tags | Group monitors with tags to keep large accounts tidy. |
| IP version | Force IPv4, IPv6, or let Upzilla use whichever is available. |
Never show visitors a certificate warning.
Watch STARTTLS certificates on SMTP, POP3 and IMAP.
Track dozens of certificates from one dashboard.
Agencies protect every client certificate automatically.
Create as many notification methods as you like, even on the free plan.
You choose. The Before expire setting defines how many days ahead of expiry the alert is sent.
It verifies the certificate presented by the server and its expiry. For a deeper analysis, use our SSL validation tool.
Yes, choose the SMTP, POP3 or IMAP (STARTTLS) protocol.
Auto-renewal fails silently. Monitoring is the safety net that tells you it did.
No card required. 10 monitors of any type, free.