Your site goes down, you know instantly. Best free plan in the industry.
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And you wouldn't know until a customer complains, a sale is lost, or you check manually. By then, the damage is done.
Every minute of downtime means missed sales, abandoned carts, and frustrated customers who may never come back.
Customers expect your site to work. When it doesn't, they question your reliability and look for alternatives.
Finding out hours later means scrambling to fix issues while customers wait. The longer it takes, the worse it gets.
We check your website as often as every 30 seconds. The moment something goes wrong, you get an alert via email, SMS, or phone call. Fix issues in minutes instead of hours.
Just the features you need, without all the extra fluff you don't.
We ping your site up to every 30 seconds. If it goes down, you know immediately.
Share your uptime with customers. Beautiful status pages that build trust and reduce support tickets.
Custom domains available on paid plans
Get alerted before your SSL certificate expires. Never let an expired cert take your site down.
Free on all plans
Monitor your pages for specific keywords. Get notified instantly when content appears or disappears.
Check that critical ports like SMTP, FTP, or custom services are open and responding on your servers.
Verify your servers are reachable with ICMP ping checks. Track latency and detect network issues early.
Monitor your API endpoints with custom headers, request bodies, and expected response validation.
Monitor UDP services like DNS servers, game servers, and VoIP systems to ensure they stay responsive.
Track your DNS records for unexpected changes. Catch misconfigurations and hijacking attempts instantly.
Make sure your scheduled tasks actually run. Get alerted if a cron job fails to check in on time.
Set response time thresholds and get alerted when your site or API starts responding slower than expected.
Instant alerts to your inbox
Text alerts to your phone
Phone calls for critical alerts
Alerts in your team channels
Need an additional integration? Tell us in our chat widget at the bottom right and we'll get it built within days.
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No hidden fees. No surprise charges. Cancel anytime.
Save ~30% with annual billing.
Have another question? Ask us in the chat widget at the bottom right.
Notifier is a website monitoring service that checks your websites, APIs, and servers around the clock and alerts you instantly when something goes down. We check your URLs at intervals as frequent as every 30 seconds and notify you via email, SMS, or phone call so you can fix issues before your customers notice.
An uptime monitor is an automated check that regularly visits your website or API endpoint to verify it's working correctly. Each monitor watches a single URL and checks for a successful response (like an HTTP 200 status code). If the check fails, you get notified immediately. You can create multiple monitors to watch different parts of your infrastructure.
Sign up for a free Notifier account, click "Add Monitor," and enter the URL you want to monitor. Choose your check interval (how often we check your site) and select how you want to be notified when it goes down. That's it. The whole process takes less than 30 seconds and we'll start monitoring immediately.
After adding your monitors, go to the Status Pages section and click "Create Status Page." Select which monitors to display, customize the appearance, and publish. You'll get a public URL you can share with customers. Paid plans include custom domain support so you can host your status page at something like status.yourcompany.com.
You can monitor any publicly accessible URL including websites, REST APIs, GraphQL endpoints, webhooks, and web applications. We check HTTP/HTTPS endpoints and verify they return successful status codes. This works for marketing sites, SaaS applications, e-commerce stores, internal tools, and API health checks.
Check frequency depends on your plan. The Free plan checks every 5 minutes. The Solo plan ($4/month) checks every 1 minute. The Team plan ($19/month) and Enterprise plan ($35/month) check as frequently as every 30 seconds. More frequent checks mean faster detection of downtime so you can respond quicker.
Multi-region monitoring is coming very soon! This feature will let you check your site from different geographic locations to catch regional outages and verify global availability. If you're interested in helping us beta test this feature, reach out to us in the chat widget at the bottom right corner of the page.
Notifier supports multiple notification channels. Email alerts are included on all plans. SMS text messages and phone call alerts are available for urgent notifications. You can also integrate with Slack to get alerts in your team channels. When creating a monitor, simply select which notification methods you want and we'll alert you through all of them when downtime is detected.
Yes! Monitor any URL you want. Check HTTP status codes, response times, and even response body content. Perfect for API health checks.
Yes! Our free plan includes 10 monitors, 5 status pages, and a 5 minute check interval. No credit card required.
Less than 30 seconds. Add your URL, select your monitoring interval, and we'll notify you via email when something goes wrong.
