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.

Mattermost Integration

Connect LemWatch alerts to a Mattermost channel via incoming webhook.

Mattermost Integration

Pro Plan and Above

LemWatch posts a Slack-compatible JSON payload ({ text, attachments: [...] }) to Mattermost. The same field also accepts catch-hook URLs from Zapier, Make, n8n, IFTTT, and Pipedream — see Automation Recipes.

Setup

In Mattermost: Main Menu → Integrations → Incoming Webhooks → Add Incoming Webhook.
Pick the channel that should receive alerts, set the display name, and save.
Copy the URL (looks like https://your-mattermost.example.com/hooks/abc123...).
In LemWatch: Settings → Notifications → Mattermost / Automation webhook → paste and save.
Click Send test to verify.

Self-hosted notes

Any HTTPS host works as long as it accepts a Slack-style JSON POST.
LemWatch blocks private/loopback IPs and non-HTTPS URLs at the server (SSRF protection).
If you front Mattermost with a reverse proxy, make sure the proxy forwards the raw JSON body.

Message format

Severity-coloured attachment header (red / yellow / green).
Site name, URL, alert type, and current metric values.
A direct link back to the LemWatch dashboard.

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