Monitor URL uptime with data tables and SMTP email alerts

by SPIRIDON TSAKONAS ✓ · 2 views · created 2026-09-29 · DevOps

What this workflow does

This workflow has 18 nodes and runs on a schedule (every 5 minutes) (plus 1 other trigger). It uses only n8n's built-in nodes.

How it runs

Trigger: On a schedule (every 5 minutes) (plus 1 other trigger).

1. Load Incident Log Data (Data table): get
2. Load 48h Check Data (Data table): get
3. Load Recent Checks Data (Data table): get
4. Load Recent Incidents Data (Data table): get
5. Build Website Check List (Code): runs custom JavaScript code
6. Create Daily Uptime Report (Code): runs custom JavaScript code
7. Check Website Status (Code): runs custom JavaScript code
8. Email Daily Uptime Report (Send Email): sends an email over SMTP
9. Evaluate Site Health (Code): runs custom JavaScript code
10. Remove Old Check Data (Data table): delete rows

…plus 6 more steps. See the full node list below.

Before you upgrade to n8n 3.0

Nodes used (5)

• Schedule Triggern8n-nodes-base.scheduleTrigger
• Data tablen8n-nodes-base.dataTable
• Coden8n-nodes-base.code
• Ifn8n-nodes-base.if
• Send Emailn8n-nodes-base.emailSend

From the author

Quick overview This workflow monitors a list of URLs every 5 minutes, confirms downtime only after two consecutive failures, emails down/recovery alerts via SMTP, logs checks and incidents to n8n Data Tables, and sends a daily uptime and latency report at…

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