SSL Certificate Monitoring with Email Alerts

# Daily SSL certificate monitoring with email alerts and Google Sheets updates

This automation workflow helps monitor SSL certificate expiration dates across multiple domains without manual effort. It runs daily, checks certificate validity, and sends email alerts one week before expiry—preventing website outages and maintaining user trust.

## Who it´s for
- IT administrators managing infrastructure for multiple domains
- DevOps engineers looking for a cost-effective SSL monitoring solution
- Web agencies managing client websites and security compliance

## What the automation does
- Runs daily on a cron schedule
- Fetches a list of domains from Google Sheets
- Checks SSL certificate validity using the free ssl-checker.io API
- Updates the sheet with new data: start date, expiry date, days remaining
- Sends an email alert via SMTP if 7 or fewer days remain

## What´s included
- Ready-to-use n8n workflow
- Trigger and handler logic
- Integrations with Google Sheets, SMTP, and ssl-checker.io
- Basic setup and adaptation guide

## Requirements for setup
- n8n account (cloud or self-hosted)
- Google Sheets access with read/write permissions
- SMTP server for sending email alerts
- Access to ssl-checker.io API (free tier)

## Benefits and outcomes
- Prevents unexpected website downtime due to expired certificates
- Saves time otherwise spent on manual checks
- Centralized certificate data in Google Sheets
- Reliable alternative to paid monitoring tools
- Easy scalability—just add new domains to the sheet

## Important: template only
Important: you are purchasing a ready-made automation workflow template only. Rollout into your infrastructure, connecting specific accounts and services, 1:1 setup help, custom adjustments for non-standard stacks and any consulting support are provided as a separate paid service at an individual rate. To discuss custom work or 1:1 help, contact via chat