Know the moment your site goes down
External monitors ping your sites every minute worldwide. An outage is reported only when most locations agree—so you react to real incidents, not false alarms.
Explore uptime monitoringUptime & reputation monitoring
HetrixTools
Free uptime monitor & blacklist monitor
Maximize uptime and protect your email reputation. Websites, servers, IPs, and domains—one dashboard, smart alerts, and status pages you can brand.
- Minute-by-minute checks from up to 12 global locations
- Blacklist & Microsoft SNDS tracking with delisting links
- Notifications on 20+ channels including email, SMS, and phone
12
Global check locations
20+
Alert channels
1 min
Typical setup time
24/7
Blacklist & uptime checks
One account
Uptime, server, and blacklist monitoring together
Stop juggling separate tools. HetrixTools unifies website uptime, server health, IP and domain blacklist status, SSL expiry, and public status pages under one login.
Spot server issues before downtime
Deploy a lightweight agent on Linux, Windows, macOS, or shared hosting to watch CPU, RAM, disks, network, RAID, and drive health—and get warned while you can still fix it.
Monitor server metricsStay off blacklists and out of spam
See when IPs or domains land on major blocklists, with reports that link straight to delisting pages. Microsoft SNDS is included so you know how inbox providers view your sending.
Protect email reputationBlacklist intelligence
Blacklist checks, happening right now
HetrixTools continuously scans major DNS blocklists and updates your dashboard in real time. When something changes, you get context—not just a red flag.
- All major blacklists monitored in one view
- Direct links to each provider’s delisting workflow
- SNDS monitoring for Microsoft’s view of your IPs
Live system activity
Checks per second (last 60s)
Illustrative view of HetrixTools’ always-on blacklist engine.
Everything else you’d expect
Operational depth without the complexity
Status pages
Publish branded public status pages that reflect uptime and blacklist health—so customers see transparency while you stay in control.
SSL and domain expiry
Get reminded before certificates and domains expire, and receive alerts when nameservers change unexpectedly.
Outage diagnostics
When something fails, review errors, ping and MTR samples, and snapshots of what visitors saw—so root cause is faster to find.
Maintenance windows
Schedule maintenance ahead of time, or kick it off with one click from an alert email so notifications pause when you’re already fixing the issue.
Get notified anywhere
Alerts on the channels your team actually uses
Route incidents to email, SMS, phone calls, chat apps, and more—over twenty integration options—so the right person hears about downtime or blacklist hits immediately.
Email
SMS
Phone call
Slack
Discord
Telegram
PagerDuty
Webhooks
+ more
Unified dashboard
Websites, servers, IPs & domains
The same monitoring rules, alert policies, and status pages apply across every asset type—no duplicate setup.
Open HetrixToolsBuilt for operators
What teams value about HetrixTools
From solo site owners to infrastructure teams, users rely on consistent checks, clear incident context, and reputation monitoring that keeps mail deliverable.
“We cut noise from flaky monitors and still catch real outages within a minute—exactly what we needed for customer-facing sites.”— DevOps lead, SaaS team
“Blacklist alerts with delisting links saved us hours when a shared IP got listed. SNDS visibility is a bonus we didn’t expect.”— Email operations manager
“One dashboard for uptime, servers, and domains beats paying for three separate tools—and setup really did take about a minute.”— Independent publisher
Start monitoring in a minute
Join HetrixTools free and keep uptime high, servers healthy, and your IPs off blocklists—with alerts wherever your team works.
Get started at HetrixTools