n8n Uptime Monitor: Google Sheets + Gmail, Slack, Telegram, Vapi

Instant Website Uptime Monitoring with Google Sheets Alerts (Gmail, Slack, Telegram, Vapi)

This n8n workflow automatically checks a list of website URLs from Google Sheets, logs downtime, and alerts your team when sites go down or recover—sending notifications via Gmail, Slack, Telegram, and even a Vapi phone call.

What this workflow does

• Runs on a schedule: A scheduled trigger starts the monitoring process.
• Reads URLs from Google Sheets: It pulls each website’s URL from your spreadsheet and processes them one by one.
• Checks availability via HTTP: For each URL, it sends an HTTP request with a short timeout to determine the current status.
• Handles recovery (“site up”): If a site is up and an outage is actively logged, the workflow updates Google Sheets with the `Up Time`, calculates total downtime, and notifies via Gmail, Slack, and Telegram.
• Handles outage (“site down”): If the site appears down, it searches Google Sheets for an existing open downtime record. If none exists, it appends a new downtime row and sends site down alerts via Gmail, Slack, Telegram, and a Vapi phone call.

Use cases

• Monitor multiple production or SaaS endpoints and ensure your on-call team gets immediate alerts.
• Track downtime history in Google Sheets for simple reporting and incident review.
• Confirm recovery and automatically notify stakeholders when services return to normal.

Technical details

• n8n scheduled trigger for automated uptime checks.
• Google Sheets for reading the “Website URL” list and writing `Down Time`, `Up Time`, and `Total downtime`.
• HTTP status checking with a short timeout to determine up/down.
• Gmail for email notifications.
• Slack and Telegram for chat alerts.
• Vapi for phone-call notifications when a new downtime incident is created.
• Logic implemented with if and code nodes (plus a Sticky Note for clarity).