This article provides a complete, practical walkthrough of the Telegram Code Automation 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:  
   Transforming Gmail Promotions into Audio Podcasts: A Smart n8n Workflow for Seamless Listening  
   
   Meta Description:  
   Learn how this innovative n8n automation workflow converts “CATEGORY_PROMOTIONS” emails from Gmail into summarized audio clips delivered directly to Telegram using AI-powered tools and TTS APIs.
   
   Keywords:  
   n8n automation, Gmail promotions, email to podcast, text-to-speech, TTS API, OpenAI GPT, Telegram bot, workflow automation, email summarization, OpenAI in n8n, TTS Telegram, productivity tools  
   
   Third-Party APIs and Services Used:  
   
   1. Gmail API (via Gmail OAuth2) – for email fetching and filtering.
   2. OpenAI API – for natural language summarization using ChatGPT.
   3. TikTok TTS API (https://tiktok-tts.weilnet.workers.dev/api/generation) – for converting summarized text to audio.
   4. Telegram Bot API – for sending summarized audio messages to Telegram chats.
   
   Article:
   
   📨 From Inbox to Earbuds: Automating Gmail Promotions into Audio Podcasts with n8n 🎧
   
   In today's fast-paced world, staying informed without lifting a finger—or your eyes off the road—is more than convenient. It's essential. That’s where automation tools like n8n shine, empowering creators to build smart workflows that save time and enhance accessibility.
   
   If you're tired of sifting through your Gmail promotions tab, this article is for you. We’ll walk you through a creative and efficient use of n8n that transforms promotional emails into summarized audio clips, delivering them directly to your Telegram chat as mini-podcasts.
   
   🛠️ The Purpose  
   The project replaces tedious reading of promotional emails with bite-sized audio messages. Whether you're commuting, working out, or cooking, you can now catch up on deals and newsletters without reading a single line. It's perfect for multitaskers or accessibility-focused users who prefer listening over reading.
   
   📬 Step 1: Detect Promotional Emails with Gmail Trigger  
   The journey begins with the Gmail Trigger node in n8n. It checks your Gmail every minute for new emails labeled “CATEGORY_PROMOTIONS.” Think of it as a digital assistant continually scanning your inbox for content worth converting.
   
   Key Features:
   - Polling frequency: Every minute
   - Filter: CATEGORY_PROMOTIONS label
   - Authenticated via Gmail OAuth2
   
   📥 Step 2: Fetch and Clean the Email Content  
   Once an email is detected, the “Get message content1” node pulls in all related content for processing. To ensure the summary is uncluttered, the custom code node "Delete the unnecessary items" strips out irrelevant metadata, headers, IDs, and HTML tags.
   
   🧠 Step 3: Summarize Using OpenAI & LangChain  
   This stripped-down email content is now summarized using a LangChain-powered Summarization Chain with OpenAI’s GPT model. The prompt used here carefully crafts a concise, newsletter-like snippet—peppered with emojis and adapted for text-to-speech clarity (limited to under 247 characters).
   
   ✨ Cool Touches in the Prompt:
   
   - Avoids starting with the subject line.
   - Summarizes any linked content briefly.
   - Optimized for easy listening with TTS.
   
   🎙️ Step 4: Convert to Audio with Free TTS API  
   Next, the summary is sent to the TikTok TTS API to generate a realistic text-to-speech audio clip. The POST request passes the summarized text along with a preferred voice ID (e.g., en_us_001). The result is a base64-encoded audio blob.
   
   📎 Step 5: File Conversion and Merging  
   The audio data, encoded in base64, is converted into a binary file via the "Convert from base64 to File" node. This audio file is then merged with the original text using n8n’s merge node—so both caption and audio stay in sync.
   
   📦 Step 6: Combine and Send with a Telegram Bot  
   Once audio and text are packaged, the "Aggregate in same cell" node ensures everything is bundled neatly. Finally, the Telegram node sends the audio as a voice note to a predesignated chat ID, including the text summary as the caption.
   
   How it Looks to the User:
   
   - Incoming Telegram Message  
     📤 Audio Clip: [Attached Voice Note]  
     📝 Caption: "⚡ Big discounts at your favorite store! 🛍️ Select items are 20–50% off until Friday 🔥"
   
   🎯 Why This Workflow is Awesome
   
   - 📲 Mobile-Friendly: Telegram delivery means it's instantly accessible on the go.
   - 🧠 Smart Summarization: Saves user from long-form emails.
   - 🎧 Audio-First: Perfect for auditory learners or visually impaired users.
   - 🤖 Fully Automated: Runs every minute, effortlessly.
   - 🌐 API Synergy: Combines Gmail, OpenAI, a TTS API, and Telegram for a full-cycle automation.
   
   🔧 APIs in Action
   
   Here’s a quick recap of the tech stack behind this intelligent automation:
   
   1. Gmail API (OAuth2 Auth) – Email receipt/tracking.
   2. OpenAI (via LangChain integration) – Natural text summarization.
   3. TikTok TTS API – Converts summaries into realistic speech.
   4. Telegram Bot API – Audio message delivery.
   
   🧩 Final Thoughts  
   This workflow is not just about automation—it’s about reimagining how we interact with email. By transforming mundane, screen-bound content into engaging audio mini-podcasts, n8n becomes a powerful tool for productivity, accessibility, and innovation.
   
   Whether you're a solopreneur, a developer, or just a productivity nerd, replicating this workflow in your n8n instance opens up a new realm of communication possibilities. Automate your inbox. Free your eyes. Start listening.
   
   🚀 Happy Automating!

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.