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.

How does Lemwatch monitor XML sitemaps?

Lemwatch fetches every sitemap and sitemap-index nightly, validates XML, and alerts on 404s, drops in URL count, and stale lastmod dates.

Quick answer

Lemwatch discovers your sitemaps from robots.txt, fetches each nightly, validates the XML, and alerts on 404s, sudden URL-count drops (>20%), and lastmod dates older than 30 days.

What we check

XML validity and correct namespace
HTTP status of each sitemap URL (up to 500 per site)
URL count trend vs last 7 days
lastmod recency
Nested sitemap-index resolution

Where to find it in Lemwatch

Site → SEO → Sitemaps — see every discovered sitemap and its history.

FAQ

What is the 500-URL cap?

We sample the first 500 URLs per sitemap to keep crawl budget sane. Priority pages are picked first.

Can I add sitemaps manually?

Yes — paste any URL under Sitemaps → Add.

Lemwatch — All-in-One Website MonitoringUptime, performance, SEO, security, and change detection in one platform. Free tier available.Pricing · Features · Sign Up