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All-in-One Monitoring & Alerts for Web Experts.

Never miss a beat with complete visibility across uptime, SSL, DNS, domains and more — backed by instant alerts and total control.

How Sentinel Helps

HTTP Check

Monitor your web endpoints with precision. Sentinel performs ongoing HTTP checks to ensure your services are up, responding correctly, and performing within expected thresholds. Get alerted instantly when endpoints fail or degrade.

SSL Check

Track SSL certificate status across your domains. Sentinel proactively monitors for expiry, misconfigurations, and chain issues to ensure secure and uninterrupted connections—giving you ample time to renew before problems arise.

Team Management

Easily manage users, roles, and permissions. Sentinel enables team-based access control so you can assign responsibilities, delegate tasks, and maintain secure collaboration across your monitoring infrastructure.

Notifications

Get notified where it matters most. Using the integrations connected to your team, Sentinel delivers real-time alerts about downtime, performance issues, and system events—ensuring the right people are informed at the right time.

DNS Audit

Get full visibility into your DNS configuration. Sentinel audits your DNS records to detect inconsistencies, propagation delays, and misconfigurations—helping you avoid outages and ensure reliable domain resolution.

Domain Monitoring

Track critical changes to your domain status. Sentinel monitors WHOIS data and domain records for updates such as registrar changes, expiry risks, or ownership modifications—keeping you informed and in control of your digital assets.

Integrations

Connect Sentinel with your existing tools. Whether it’s Slack, PagerDuty, Microsoft Teams, or custom webhooks, our integrations ensure alerts and updates flow directly into your incident response and monitoring stack.

Workflows

Design powerful, no-code automations across your infrastructure. Sentinel Workflows enable you to define custom triggers, conditions, and actions—allowing you to streamline operations, eliminate repetitive tasks, and respond intelligently to events in real time.

How Sentinel Works

1

Create Account

Get started in minutes. Sign up using your email. Once in, you’ll land on your dashboard. From here you’ll be able to manage your monitors and invite team members and easily manage roles right from the get-go.

2

Add Monitor

Connect and configure instantly. Choose which services you want Sentinel to watch: HTTP uptime, SSL certificate health, or DNS configurations. Tell us the target domain or IP (dependant on service) and pick a checking frequency. Sentinel will then begin collecting data and running checks right away.

3

Notification Setup

Stay informed, effortlessly. Configure alerts to reach you exactly when you need them. Whether it’s via email, SMS, Phone, Microsoft Teams, Slack, Discord or webhook integrations, Sentinel ensures your team hears about downtime, certificate expiry, or DNS changes.

4

Review

Inspect, analyse, resolve. Your dashboard provides clear, actionable insights into each monitor’s performance. Trended logs, uptime percentages, and detailed check histories help you pinpoint recurring issues. Use these insights to troubleshoot, optimize your infrastructure, and ensure continual reliability.

Frequently Asked Questions

What is 24/7 uptime monitoring?

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