Monitoring & Alerts

Know before your client does

Round-the-clock uptime, SSL, DNS, and performance monitoring from multiple global locations — with 1-minute check intervals on Pro.

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No credit card required. Up and running in 60 seconds.

Everything you need to monitor at scale

One dashboard. Unlimited monitors. Full-stack visibility across every client site you manage.

Uptime & HTTP Monitoring
Track every request. Get alerted the moment your site returns an error or goes offline.
SSL Certificate Tracking
Never let an SSL expire. Alerts 30, 14, and 7 days before expiry.
DNS Monitoring
Detect DNS hijacking, unexpected record changes, and propagation issues instantly.
TCP / Port Monitoring
Monitor any TCP port — databases, mail servers, custom services.
Multi-location Checks
Verify from US, EU, and APAC before alerting. No more false positives.
Core Web Vitals
Track LCP, CLS, FID on every check. Catch performance regressions early.
Security Headers
CSP, HSTS, X-Frame-Options — graded on every scan.
Blacklist Monitoring
Know immediately if Google or any major blacklist flags your domain.
Response Time Anomalies
Baseline your response times and get alerted on sudden spikes.
Maintenance Windows
Pause alerts during planned downtime. No noise in your inbox at 2 am.
Port & Service Checks
Verify custom TCP services are accepting connections from all regions.
Domain Expiry Tracking
Catch domain renewals before they lapse. Never lose a client domain again.

Live monitor dashboard

Real-time status across all your client sites — at a glance.

app.sitebrief.io / monitors
24
Active monitors
100%
Uptime (30d)
238ms
Avg response
0
Open incidents
acmecorp.comHTTPS182msSSL 89dUS / EU / APAC
store.client2.ioHTTPS340msSSL 22dUS / EU
api.client3.comTCP55msSSL —US / EU / APAC
oldsite.agency.coHTTPS2.1sSSL 6dUS

Built for agencies managing many sites

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1-min check intervals

Pro plan checks every 60 seconds. Catch outages faster than your clients notice.

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Multi-location verification

Three global nodes confirm every alert before notifying you — zero false positives.

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Instant alerts

Slack, email, SMS, PagerDuty, and webhooks — your team gets notified your way.

Ready to monitor smarter?

Set up your first monitor in under 60 seconds. No credit card. Cancel anytime.

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