What does Lemwatch monitor?

Lemwatch runs 20+ automated checks per site: uptime, response time, SSL/TLS expiry, domain expiry, DNS changes, sitemap health, broken links, content changes, SEO audits, mobile usability, security headers, and more.

Yes. The free tier monitors up to 5 sites. Pro is $19/month for 50 sites and Agency is $59/month for 100 sites, both with full feature access.

How is Lemwatch different from UptimeRobot or Pingdom?

Lemwatch bundles uptime, change detection, SEO audits, security scans, and a public API in one platform — features competitors charge separately for. It also includes team workspaces, white-labelled status pages, and a webhook system out of the box.

Does Lemwatch send alerts?

Yes. Lemwatch supports email, browser push, webhooks, and per-site notification routing so the right person hears about the right incident.

Is there a public API?

Yes. Pro and Agency plans get a public REST API with webhooks for sites, checks, incidents, and reports.

What happens when an SSL certificate expires?

When an SSL certificate expires, visitors will see a security warning in their browser, and most will leave immediately. Search engines may also drop your site from results. An expired certificate can devastate your traffic and conversions.

How far in advance will Lemwatch alert me?

By default, Lemwatch alerts you at 30, 14, and 7 days before expiration. This gives you plenty of time to renew, even accounting for procurement processes or weekends.

Does Lemwatch work with Let's Encrypt certificates?

Yes! Lemwatch monitors all types of SSL certificates, including Let's Encrypt, Comodo, DigiCert, and others. If your site uses HTTPS, we can monitor it.

Can I monitor multiple domains and subdomains?

Absolutely. You can add as many sites as your plan allows, including subdomains. Each certificate is tracked independently with its own expiry alerts.

Does Lemwatch detect SSL misconfigurations?

Yes! Beyond expiry monitoring, Lemwatch checks for common SSL issues like mixed content (HTTP resources on HTTPS pages), insecure cipher suites, and certificate chain problems.

Can I include SSL status in client reports?

Yes! All our PDF and CSV exports include SSL certificate status and expiry information, perfect for agency clients or compliance documentation.

How often does Lemwatch check SSL certificates?

SSL certificates are checked during every uptime check (every 5 minutes), but expiry status is cached and updated daily since certificates don't change frequently.

Do you support wildcard certificates?

Yes. Lemwatch can monitor sites using wildcard certificates. The certificate details will show the wildcard pattern (e.g., *.example.com).

Security Feature

Check every SSL certificate, then never think about them again

Paste up to 25 domains below and see expiry dates, issuers and TLS versions in seconds — free, no signup. Then let Lemwatch watch them for you and alert at 30, 14, 7 and 1 day before expiry.

Free bulk SSL certificate checker

Up to 25 domains at once. Validity, days to expiry, issuer, TLS version and grade — exportable to CSV. Nothing to install and no account required.

Paste your domains — one per line, up to 25

0 URLs ready

1 hr

average renewal lead time

needed to renew, validate and deploy a new cert without downtime

30 days

advance warning

Lemwatch alerts at 30, 14, 7 and 1 day before expiry

100%

browsers block expired certs

Chrome, Safari and Firefox all show full-page security warnings

The True Cost of Expired SSL

When Certificates Expire

Browsers show scary "Not Secure" warnings
Most visitors immediately leave your site
E-commerce transactions become impossible
Google may temporarily de-rank your site

With Lemwatch Monitoring

30-day advance warnings give time to act
All certificates visible in one dashboard
Automatic alerts via email, Slack, or webhook
Never experience an SSL-related outage

How SSL Monitoring Works

Automatic certificate tracking from day one

Add Your Sites

Enter your URLs and Lemwatch automatically detects and monitors your SSL certificates.

Track Expiry Dates

See all your certificates in one dashboard with days remaining until expiration.

Get Timely Alerts

Receive notifications at 30, 14, and 7 days before expiry—plenty of time to renew.

Complete SSL Certificate Monitoring

Everything you need to keep your certificates current

Expiry Tracking

Know exactly when each certificate expires. Get alerts 30, 14, and 7 days before expiration.

Automatic Alerts

Never miss an expiring certificate. Get notified via email, Slack, or webhook.

Certificate Details

View issuer, validity period, and certificate chain for each monitored site.

Configuration Issues

Detect SSL misconfigurations, mixed content, and other security problems.

SSL Reports

Include SSL status in your professional reports for clients or stakeholders.

Protocol Checking

Verify your site supports modern TLS versions and secure cipher suites.

SSL Monitoring FAQ

Common questions about certificate monitoring

Never Miss Another SSL Expiry

Join teams who trust Lemwatch to keep their certificates current. SSL monitoring included in all plans.

Start Free Trial

No credit card requiredFree forever planCancel anytime

Explore More

Quick answer

How do I monitor SSL certificate expiry?

Run a daily TLS handshake against the hostname you actually serve, read the certificate's notAfter date, validate the whole chain, and alert 30, 14, 7 and 1 day before expiry.

What is checked: Leaf and intermediate certificates, expiry date, TLS grade
Warning schedule: 30, 14, 7 and 1 day before expiry
Common cause of outage: A missed Let's Encrypt renewal on a 90-day certificate
Free check: Public SSL checker, no account needed

How the alternatives compare

Public pricing, checked 2026-09-14. Choose whichever fits — the facts are the same wherever you read them.

SSL certificate monitoring: free tier, entry price and check interval per tool
Tool	Free tier	Entry price	Fastest check	Choose it when
Lemwatch	Yes — 10 sites	$19/mo	60s	You want uptime, SSL, DNS, visual and SEO checks in one place.
Oh Dear	Trial only	$22/mo	1 min	You run Laravel/PHP and want the application-health-check integration Oh Dear pioneered.
Site24x7	Yes	$9/mo	1 min	You want a single Zoho-family vendor covering server + network + basic web monitoring.
UptimeRobot	Yes	$7/mo	1 min	You only need HTTP/ping uptime checks and want the cheapest paid tier.

Everything we publish on ssl certificate monitoring

Facts checked: 14 September 2026 by the Lemwatch research team.