SSL Certificate Expiry Monitor with n8n 🔒

This project automates SSL certificate checks using n8n. It monitors specified domains and alerts when their SSL certificates are nearing expiration — helping teams stay ahead of potential service disruptions.

🔧 What It Does

• Periodically checks SSL certificate expiry dates for one or more domains.
• Sends alerts (e.g. via email, Slack, or other channels) if a certificate is close to expiring.
• Easily customizable and extendable to suit your notification needs.

🛠️ Built With

• n8n – Workflow automation tool
• HTTP Request Node – For querying SSL status
• (Optional) Email/Slack Node – For sending alerts

📦 Setup

1. Clone this repo or download workflow.json.
2. Import workflow.json into your n8n instance.
3. Update the domain list and alerting method in the workflow.
4. Set the workflow to run daily or at your preferred interval.

📸 Workflow Preview

💡 Customization Ideas

• Connect it with a Google Sheet for dynamic domain management
• Add Telegram, Discord, or Microsoft Teams notifications
• Expand it to include other health checks (e.g., uptime, WHOIS expiry)

🧠 Inspiration

SSL outages can disrupt trust and access. This automation ensures you're always ahead of certificate renewals — no more surprises.

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Feel free to fork and modify. PRs welcome!