Templates / Website Uptime Monitor with Instant Alerts

Website Uptime Monitor with Instant Alerts

Beginner   Apps: Schedule, HTTP Request, IF, Gmail  ·  Setup: 5 minutes

Uptime monitoring services charge $10-30/month per site for a ping and an email. A self-hosted n8n instance does the same check every 5 minutes for effectively $0, for as many sites as you want.

Download workflow JSON (free) Setup guide

What this workflow does

  1. A Schedule Trigger fires every 5 minutes.
  2. An HTTP Request node loads your website and never throws, even on errors.
  3. An IF node checks the status code: anything other than 200 means trouble.
  4. A Gmail node fires an alert with the status code and time, only on failure - no noise.

Setup guide

  1. Import the JSON into n8n (Workflows > Import from File).
  2. Open the HTTP Request node and replace the URL with your website address.
  3. Connect Gmail (or swap for Slack/Telegram) in the alert node and set your address.
  4. Optionally change the schedule from 5 minutes to your preferred interval.
  5. Activate the workflow. Test it by temporarily pointing the URL at a page that returns 404.

Want this running 24/7?

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FAQ

Can I monitor multiple websites with one workflow?Yes. Put your URLs in a Code node that outputs one item per site, and connect it between the schedule and the HTTP Request node. The rest of the workflow handles each site independently.
Can it alert me on Slack, Telegram, or SMS instead?Swap the Gmail node for a Slack, Telegram, or Twilio node. The IF-node logic stays identical.
Will this catch slow responses, not just downtime?Add a second condition to the IF node comparing the request duration against a threshold, and alert when it is exceeded.

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