DownNotifier.com
DownNotifier.com monitors websites and sends alerts when they appear to be down.
What DownNotifier.com is
DownNotifier.com monitors websites and sends alerts when they appear to be down. It treats connection errors and HTTP status codes below 200 or above 399 as downtime. You can also request alerts when specified text is missing from a monitored page. SSL monitoring checks certificates hourly and emails warnings about expiry within 10 days, incorrect operation, insecure configuration, or older-browser compatibility issues. An email deliverability validator checks SPF, DKIM, DMARC, and BIMI records; DKIM validation requires a test email. The service offers web and API access. Its FREE plan costs nothing, checks five websites every 10 minutes, and includes email alerts; SMS alerts require credits. PREMIUM costs $14.95 a year with one-minute checks, 10 websites, SSL monitoring, multiple contacts, extended reports, and unlimited history. PROFESSIONAL costs $99 a year with 20-second checks, 25 websites, WhatsApp notifications, seven days of full logs, and 500 yearly SMS/WhatsApp credits. The terms state a 99.7% monthly availability target.
Good
- Free plan monitors five websites
- Content checks alert when text is missing
- Hourly SSL certificate monitoring
- Email authentication checks SPF, DKIM, DMARC, BIMI
- API documentation is available
Watch out
- Monitor URL passwords are not stored encrypted
- FREE plan checks every 10 minutes
- SMS alerts require credits on FREE
- DKIM validation requires a test email
Who it suits
It suits people who need website uptime, page-content, SSL, or email-record monitoring through web or API access. Choose among plans based on monitored sites, check intervals, and notification needs.
Verdict
DownNotifier.com covers uptime, content, SSL, and email authentication checks with web and API access. Its paid plans add faster intervals, broader history, and additional notification options, while the URL-password limitation deserves attention.
Plans and prices
From DownNotifier.com's own pricing page, checked 11 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| FREE | Free | 10 minute monitoring interval · 5 websites · E-mail alerts · SMS alerts (credits required) |
| PREMIUM | $14.95 a year | 1 minute monitoring interval · 10 websites included · Multiple contacts per monitor · SSL certificate monitoring · Extended reports · Unlimited history · $14.95 per year |
| PROFESSIONAL | $99 a year | 20 seconds monitoring interval · 25 websites included · 500 yearly SMS/WhatsApp credits included · 7 days full monitoring logs · WhatsApp notifications · $99 per year |
The facts
Each one read from DownNotifier.com's own pages, with the date it was checked.
What it does
- API
- The site links to API documentation.checked 11 Oct 2026
- Availability target
- The terms state a target service availability of 99.7%, calculated monthly.checked 11 Oct 2026
- Content checks
- Users can request an alert when a monitored site does not contain specified text.checked 11 Oct 2026
- Data deletion
- The privacy policy says closing an account deletes its data except an email address saved through the “Keep me updated” option.checked 11 Oct 2026
- Down definition
- Connection errors and HTTP status codes above 399 or below 200 count as a site being down.checked 11 Oct 2026
- Email authentication validator
- The email deliverability validator checks SPF, DKIM, DMARC, and BIMI records; DKIM validation requires sending a test email.checked 11 Oct 2026
- Established
- The site footer displays a copyright range of 2011–2026.checked 11 Oct 2026
- Notable limit
- The monitoring FAQ says passwords embedded in monitor URLs are not stored encrypted and are visible when editing a monitor.checked 11 Oct 2026
- Security
- The privacy policy says personal information is kept behind secured networks, access is limited, and supplied information is encrypted using SSL technology.checked 11 Oct 2026
- SSL check interval
- SSL certificate monitoring checks once per hour and sends notifications by email.checked 11 Oct 2026
- SSL monitoring
- SSL monitoring can alert about certificates expiring within 10 days, incorrect operation, insecure configuration, or compatibility issues with older browsers.checked 11 Oct 2026
- Support
- The contact page lists [email protected] as the support email address.checked 11 Oct 2026
- Website monitoring
- DownNotifier monitors websites and sends alerts when they are down.checked 11 Oct 2026
The company
- Headquarters
- The contact page lists an address in Zwolle, The Netherlands.checked 11 Oct 2026
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