![\"n8n](\"https:\/\/automizehub.ai\/blog\/wp-content\/uploads\/2026\/03\/n8n-ssl-expiry-monitoring-workflow-with-telegram-alert.png\")
<\/p>\n
Requirements<\/h2>\n
Before starting, make sure you have:<\/p>\n
- \n
- n8n installed<\/li>\n
- VPS with Certbot installed<\/li>\n
- Telegram account<\/li>\n
- Basic idea of workflows<\/li>\n<\/ul>\n
Step 1: Create a Telegram Bot<\/h2>\n
- \n
- Open Telegram<\/li>\n
- Search BotFather<\/strong><\/li>\n
- Send: \/newbot<\/li>\n
- Follow steps and get your Bot Token<\/strong><\/li>\n<\/ol>\n
Step 2: Get Your Chat ID<\/h2>\n
- \n
- Open your bot<\/li>\n
- Send: \/start<\/li>\n
- Open this URL: https:\/\/api.telegram.org\/botYOUR_BOT_TOKEN\/getUpdates<\/li>\n
- Copy your chat id<\/strong><\/li>\n<\/ol>\n
Step 3: Create n8n Workflow<\/h2>\n
Open n8n and create a new workflow.<\/p>\n
Step 3.1: Add Cron Trigger<\/h3>\n
- \n
- Add Cron Node<\/strong><\/li>\n
- Set:\n
- \n
- Every day<\/li>\n
- Time: 6 PM<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n
![\"n8n](\"https:\/\/automizehub.ai\/blog\/wp-content\/uploads\/2026\/03\/n8n-cron-trigger-6pm-daily.png\")
<\/p>\nStep 3.2: Add Execute Command Node<\/h3>\n
Add a node:<\/p>\n
Execute Command<\/strong><\/p>\n
Command: sudo<\/span> certbot certificates<\/p>\n
\n\n\n\nThis will fetch SSL expiry data.<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n![\"n8n](\"https:\/\/automizehub.ai\/blog\/wp-content\/uploads\/2026\/03\/Screenshot-2026-03-27-at-7.30.07-pm.png\")
<\/p>\n\u26a0\ufe0f Important Note<\/h4>\n
Make sure this works without password: sudo<\/span> certbot certificates<\/p>\n
\n\n\n\nIf not, add sudo permission using: sudo<\/span> visudo<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\nStep 4: Build Report (Code Node)<\/h2>\n
Now we convert raw data into a table.<\/p>\n
Add Code \/ Function node<\/strong><\/p>\n
Paste this code:<\/p>\n
\n\n\n\n\n\n\n\n\n\n\n\/\/ (same code you already have – shortened here for blog readability)<\/span><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\ud83d\udc49 (In your real blog, keep full code)<\/p>\n
This code:<\/p>\n
- \n
- extracts domain name<\/li>\n
- gets expiry date<\/li>\n
- calculates days left<\/li>\n
- creates a table<\/li>\n<\/ul>\n
![\"n8n](\"https:\/\/automizehub.ai\/blog\/wp-content\/uploads\/2026\/03\/n8n-code-node-ssl-expiry-parsing.png\")
<\/p>\nStep 5: Send Message using HTTP Request<\/h2>\n
Instead of Telegram node, we use HTTP Request.<\/p>\n
Setup:<\/h2>\n
Method:<\/strong> POST<\/span><\/p>\n
\n\n\n\nURL:<\/strong> https:\/\/api.telegram.org\/botYOUR_BOT_TOKEN\/sendMessage<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n\n<\/div>\nBody Type: <\/strong>Form URL Encoded<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\nFields:<\/h3>\n
\n\n\n\n
\n \nName<\/th>\n Value<\/th>\n<\/tr>\n<\/thead>\n \n chat_id<\/td>\n {{$json.chatId}}<\/td>\n<\/tr>\n \n text<\/td>\n {{$json.message}}<\/td>\n<\/tr>\n \n parse_mode<\/td>\n HTML<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n Step 6: Final Output<\/h2>\n
Your Telegram message will look like this: SSL Expiry Report<\/p>\n
\n\n\n\n\n\n\n\n\n\n\nDomain Name Expire Date Days Left
\nankurchemist.in 2026-04-27 31
\nswiftmazetech.com 2026-05-06 39<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\nCommon Errors & Fixes<\/h2>\n
Error: chat not found<\/h3>\n
Fix:<\/p>\n
- \n
- Send
\/start<\/code> to bot<\/li>\n- Use correct chat_id<\/li>\n<\/ul>\n
Error: No output<\/h3>\n
Fix:<\/p>\n
- \n
- Check certbot command<\/li>\n
- Check sudo permission<\/li>\n<\/ul>\n
Error: HTTP request failed<\/h3>\n
Fix:<\/p>\n
- \n
- Check bot token<\/li>\n
- Check URL<\/li>\n<\/ul>\n
Pro Tips<\/h2>\n
- \n
- Add emoji for warnings (\ud83d\udd34, \ud83d\udfe1)<\/li>\n
- Sort by days left<\/li>\n
- Add alert for < 7 days<\/li>\n
- Save logs<\/li>\n<\/ul>\n
Why This Method is Powerful<\/h2>\n
- \n
- Fully automated<\/li>\n
- No manual checking<\/li>\n
- Works for multiple domains<\/li>\n
- Easy to scale<\/li>\n<\/ul>\n
Conclusion<\/h4>\n
Now you know how to monitor SSL expiry in n8n with Telegram.<\/p>\n
You built a real automation system that:<\/p>\n
- \n
- saves time<\/li>\n
- prevents downtime<\/li>\n
- keeps your websites safe<\/li>\n<\/ul>\n
FAQ<\/h4>\n
Q1: Can I run this without n8n?<\/h3>\n
Yes, you can use cron + Python script.<\/p>\n
Q2: Can I monitor multiple servers?<\/h3>\n
Yes, use SSH or API.<\/p>\n
Q3: Can I send email instead of Telegram?<\/h3>\n
Yes, replace HTTP node with email node.<\/p>\n","protected":false},"excerpt":{"rendered":"
Do you forget when your SSL certificates expire? If yes, you are not alone. Many developers and website owners face this problem. SSL expiry can break your website and cause downtime. In this guide, you will learn: How to monitor SSL expiry in n8n How to send alerts to Telegram How to build a simple automation workflow How to format…<\/p>\n","protected":false},"author":1,"featured_media":87,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-80","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ai-agent-guide"],"yoast_head":"\n
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- Use correct chat_id<\/li>\n<\/ul>\n
- Send
- Set:\n
- Add Cron Node<\/strong><\/li>\n