DownNotifier
Simple website downtime alerts by email and SMS. Free for five sites with 10-minute checks.
About DownNotifier
DownNotifier monitors websites and sends an alert by email or SMS when a site goes down. The directory description notes that the free plan covers five sites with checks every 10 minutes. The homepage describes paid Premium and Professional tiers with more frequent checks, SSL certificate monitoring, extended reports and unlimited history.
The homepage lists WhatsApp notifications and 500 yearly WhatsApp/SMS credits under the Professional tier. It also lists 7 days of full monitoring logs there. Exact tier inclusions are not fully detailed in the source, so confirm plan limits on the website before relying on them.
Key features
- Downtime alerts by email and SMS
- Free alert when a monitored website is down
- Checks every minute on paid tiers, with 20-second checks listed as a faster option
- Multiple alert recipients for each monitor
- SSL certificate monitoring
- Extended reports and unlimited history on paid tiers
Best for: Website owners and small development teams who want simple uptime and downtime alerts for a limited number of sites.
Good for
- The free plan covers five sites.
- Alerts can be sent to several colleagues for each monitor.
- SSL certificate monitoring is listed alongside uptime alerts.
Watch out for
- The free plan checks sites every 10 minutes.
- The Professional tier lists 7 days of full monitoring logs.
- WhatsApp/SMS notifications on the Professional tier include 500 yearly credits.
DownNotifier at a glance
- Website
- downnotifier.com
- Category
- Development › Developer Tools
- Type
- Online tool
- Pricing
- Freemium
- Platforms
- Web
- Open source
- Not stated
- Last checked
- Oct 7, 2026 · Online when checked
- Listed
- Oct 7, 2026
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DownNotifier FAQ
How often does the free plan check a website?
The directory description states that the free plan checks sites every 10 minutes and covers five sites.
Can more than one person receive an alert for a monitor?
Yes. The homepage states that each monitor supports multiple recipients.
How many WhatsApp or SMS credits are included?
The homepage lists 500 yearly WhatsApp/SMS credits included with the Professional tier.
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