This article provides a complete, practical walkthrough of the Telegram Schedule Send Webhook n8n agent. It connects HTTP Request, Webhook across approximately 1 node(s). Expect a Intermediate setup in 15-45 minutes. One‑time purchase: €29.

What This Agent Does

This agent orchestrates a reliable automation between HTTP Request, Webhook, handling triggers, data enrichment, and delivery with guardrails for errors and rate limits.

It streamlines multi‑step processes that would otherwise require manual exports, spreadsheet cleanup, and repeated API requests. By centralizing logic in n8n, it reduces context switching, lowers error rates, and ensures consistent results across teams.

Typical outcomes include faster lead handoffs, automated notifications, accurate data synchronization, and better visibility via execution logs and optional Slack/Email alerts.

How It Works

The workflow uses standard n8n building blocks like Webhook or Schedule triggers, HTTP Request for API calls, and control nodes (IF, Merge, Set) to validate inputs, branch on conditions, and format outputs. Retries and timeouts improve resilience, while credentials keep secrets safe.

Third‑Party Integrations

• HTTP Request
• Webhook

Import and Use in n8n

1. Open n8n and create a new workflow or collection.
2. Choose Import from File or Paste JSON.
3. Paste the JSON below, then click Import.
4. Show n8n JSON

   Title:  
   Automating SSL Certificate Monitoring with n8n: A No-Code Alert System for Expiry and Validity
   
   Meta Description:  
   Learn how to use n8n to build a fully automated workflow that monitors SSL certificate expiry dates using Google Sheets and SSL-Checker.io. Get real-time alerts via email, Telegram, and Ntfy to ensure your site never suffers from an expired certificate.
   
   Keywords:  
   n8n workflow, SSL certificate expiry, SSL monitoring, Google Sheets automation, no-code tools, SSL-Checker, automated alerts, Gmail integration, server maintenance, certificate status check, SSL expiry reminder, Telegram alerts, Ntfy notifications
   
   Third-Party APIs Used:
   
   1. Google Sheets API  
      - To fetch and update the list of URLs being monitored and populate SSL results.
   
   2. SSL-Checker.io API  
      - To retrieve SSL certificate details including expiration date and validity status of each monitored domain.
   
   3. Gmail API  
      - To send automated email notifications based on SSL certificate status (invalid, expiring soon, or healthy).
   
   4. Telegram Bot API  
      - To send urgent notifications via Telegram for invalid SSL certificates.
   
   5. Ntfy API  
      - To publish optional info-level push notifications summarizing SSL checks.
   
   —
   
   Article:
   
   ⏤⏤⏤
   
   Automating SSL Certificate Monitoring with n8n: A No-Code Alert System for Expiry and Validity  
   
   With the increasing demand for secure web experiences, SSL certificates have become a foundational part of internet infrastructure. However, these certificates have a finite validity period, and if they expire unnoticed, they can lead to broken trust, service outages, and potential security breaches. To proactively prevent such issues, an efficient and automated solution is essential.
   
   Enter n8n — the powerful, open-source workflow automation tool. In this article, we’ll break down a ready-made n8n workflow that serves as an automated SSL monitoring system. Designed for IT administrators, DevOps engineers, and web developers, this no-code solution enables regular certificate checks and delivers timely alerts if issues are detected.
   
   🎯 What Does the SSL Expiry Alert Workflow Do?
   
   This n8n workflow performs the following key tasks:
   
   1. Triggers itself every week using a schedule trigger.
   2. Pulls a list of websites (URLs) to monitor from a Google Sheet.
   3. Sends each URL to SSL-Checker.io to fetch the SSL certificate status, expiration date, and days remaining.
   4. Logs the SSL result back to the Google Sheet.
   5. Categorizes the result as one of:
      - Invalid certificate
      - Warning (expires in <30 days)
      - Notice (expires in <60 days)
      - Info (certificate valid)
   6. Sends personalized alerts via:
      - Email (Gmail)
      - Telegram (for critical issues)
      - Ntfy (for informational messages)
   
   💡 Setting It Up
   
   To deploy this workflow successfully, you’ll need:
   
   - An n8n account (self-hosted or cloud)
   - A Google Sheet listing your target URLs (one per row)
   - Gmail credentials connected to n8n (for sending email alerts)
   - Optional: Telegram and Ntfy credentials for added notification channels
   - An SSL-Checker.io API endpoint (publicly accessible)
   
   🧱 Step-by-Step Functionality
   
   1. 🔁 Weekly Monitoring Trigger  
      Activated every Monday at 8 AM, the workflow begins by pulling the site list from a designated Google Sheet. This ensures your certificate checks happen regularly and predictably.
   
   2. 📋 Fetch URLs  
      The list is parsed using the Google Sheets API, pulling entries from a specifically formatted worksheet. Make sure your sheet has a column titled “URL” for it to function properly.
   
   3. 🛡️ Check SSL Certificates  
      Each URL is processed via a call to SSL-Checker.io, which returns detailed status data, including:
      - Certificate validity
      - Hostname and domain
      - Days remaining until expiry
   
   4. 🔄 Update Sheet with Results  
      Results are appended to another worksheet within the same Google spreadsheet. This functions as your audit log and reliability dashboard.
   
   5. 🔄 Classification via Conditional Logic  
      Using an n8n "Switch" node, the SSL results are categorized into different statuses:
      - Invalid (not recognized as a valid cert)
      - Warning (<30 days left)
      - Notice (<60 days left)
      - Info (everything else)
   
   6. ✉️ Send Alerts  
      Depending on the status:
      - 📧 Gmail sends emails with tailored subject lines and messages
      - 💬 Telegram delivers real-time warnings for invalid certs
      - 🔔 Ntfy pushes informational summaries if everything appears healthy
   
   This multi-channel alert system ensures that different team members or systems are notified in the appropriate manner.
   
   🛠️ Customization Options
   
   - Schedule Monitoring: Change the trigger interval to accommodate daily or biweekly checks.
   - Add More Hooks: Add Slack, Discord, or Microsoft Teams integrations for additional communications.
   - Increase Data Fields: Extend your Google Sheet with columns like “Contact Email,” “Owner,” or “Last Verified.”
   
   📌 Why This Workflow Is a Game-Changer
   
   SSL expiry monitoring is often neglected until it becomes a painful issue. Relying on manual tracking or third-party SaaS can be expensive or ineffective. This DIY n8n workflow gives power back to IT teams—providing full automation, customization, and transparency.
   
   With zero code and full flexibility, it embodies the spirit of automation: proactive, maintainable, and hands-free.
   
   —
   
   Don't let an expired certificate bring your system down. Automate your SSL monitoring today with this simple yet powerful n8n workflow.
   
   🔗 Get Started  
   Clone the template, connect your APIs, and rest easy knowing your SSL certificates are under 24/7 surveillance!
   
   ⏤⏤⏤
   
   For the GitHub repo and deployable workflow template, visit the n8n Templates page or contribute improvements within the n8n community today.

5. Set credentials for each API node (keys, OAuth) in Credentials.
6. Run a test via Execute Workflow. Inspect Run Data, then adjust parameters.
7. Enable the workflow to run on schedule, webhook, or triggers as configured.

Tips: keep secrets in credentials, add retries and timeouts on HTTP nodes, implement error notifications, and paginate large API fetches.

Validation: use IF/Code nodes to sanitize inputs and guard against empty payloads.

Why Automate This with AI Agents

AI‑assisted automations offload repetitive, error‑prone tasks to a predictable workflow. Instead of manual copy‑paste and ad‑hoc scripts, your team gets a governed pipeline with versioned state, auditability, and observable runs.

n8n’s node graph makes data flow transparent while AI‑powered enrichment (classification, extraction, summarization) boosts throughput and consistency. Teams reclaim time, reduce operational costs, and standardize best practices without sacrificing flexibility.

Compared to one‑off integrations, an AI agent is easier to extend: swap APIs, add filters, or bolt on notifications without rewriting everything. You get reliability, control, and a faster path from idea to production.

Best Practices

• Credentials: restrict scopes and rotate tokens regularly.
• Resilience: configure retries, timeouts, and backoff for API nodes.
• Data Quality: validate inputs; normalize fields early to reduce downstream branching.
• Performance: batch records and paginate for large datasets.
• Observability: add failure alerts (Email/Slack) and persistent logs for auditing.
• Security: avoid sensitive data in logs; use environment variables and n8n credentials.

FAQs

Can I swap integrations later? Yes. Replace or add nodes and re‑map fields without rebuilding the whole flow.

How do I monitor failures? Use Execution logs and add notifications on the Error Trigger path.

Does it scale? Use queues, batching, and sub‑workflows to split responsibilities and control load.

Is my data safe? Keep secrets in Credentials, restrict token scopes, and review access logs.