Your client's site goes down. Know it before they email you.
Drop your site's address below. sitemon checks it as often as every minute, watches its SSL certificate, and emails you the second something breaks.
3 monitors free · no credit card · takes 30 seconds
Already have an account? Log in
Check interval, down to every minute on Pro — no waiting for a client to notice first.
Consecutive failed checks before a site is marked down, so one blip never spams you.
SSL expiry warning threshold — one email when it crosses, not one on every check.
Everything you need to watch a client site
Not a stripped-down free tier bolted onto an enterprise tool — the full feature set, built for people who watch 5 to 30 sites, not 500.
HTTP/HTTPS uptime checks
Checks each site on its own schedule, from every 5 minutes on Free to every 1 minute on Pro.
Keyword monitoring
Set an expected word or phrase and get alerted if it disappears — catches a broken template that still returns 200.
SSL certificate expiry alerts
Every HTTPS check reads the certificate's expiry date, so you renew before browsers start warning visitors.
Flap protection
Status only flips to "down" after 2 consecutive failed checks — a single dropped packet won't page you at 3am.
Incident history
Every outage is logged with a start time, end time, and total downtime — ready for the next client report.
Email notifications
Down, back up (with downtime duration), and SSL-expiring-soon — exactly three emails, none of them noise.
Uptime percentages
24-hour, 7-day, and 30-day uptime for every monitor, ready to paste into a client report.
Public status pages
Share a /status/your-slug link with a client — they see uptime and incidents, no login required.
Built for multi-site work
Manage every client site from one dashboard instead of juggling logins across separate tools.
Simple pricing, no surprises
Start free. Upgrade only once you're actually watching more than 3 sites.
Free
$0/mo
- 3 monitors
- Checks as often as every 5 minutes
- SSL expiry alerts
- Public status pages
- Email notifications
Pro
$9/mo
- 25 monitors
- Checks as often as every 1 minute
- SSL expiry alerts
- Public status pages
- Email notifications
Stop finding out about downtime from your client.
Add your first site in under a minute. No credit card required.