1. Set Custom Telegram Webhook
For the webhook to work you need to set the test url first, when you get data with the test url then you can set the live url.
Webhook HTTP Method = POST
2. Check Your Telegram Webhook Situation
3. Learn your Chat ID for Telegram Message Sending from n8n
To learn your Chat ID, send a message “What is my Chat ID” to the following telegram bot.
4. Send Message with Url from Telegram Bot from n8n
5. Free Whatsapp API for n8n