{"workflow":{"id":14412,"name":"Generate and send AI newsletters with OpenAI, Tavily, Google Sheets and Gmail","views":8,"recentViews":1,"totalViews":8,"createdAt":"2026-03-28T09:02:26.187Z","description":"# ๐Ÿ“จ AI Newsletter Automation Workflow\n\n\n## ๐Ÿš€ Brief Overview (How It Works)\n\nThis workflow automates the complete process of generating and sending AI-powered newsletters. It starts with a form submission where the user provides a brand name, website, and topic query. The system then fetches relevant news, analyzes the brandโ€™s visual identity (colors & logo), and uses AI to generate structured newsletter topics and content. Finally, it converts everything into a beautifully styled HTML email, saves it to Google Sheets, and sends it to all subscribers via Gmail.\n\n---\n## Quick Setup Guide\n๐Ÿ‘‰ [Demo & Setup Video](https://drive.google.com/file/d/1ulOGWNL3cKe3y7tSKWNG2jlpL7dyiAgX/view?usp=sharing)\n๐Ÿ‘‰ [Sheet Template](https://docs.google.com/spreadsheets/d/1hvB5Zif52eCLv_X7E_OifQv9OI5usn-CQ50-TsZTMQA/edit?usp=sharing)\n๐Ÿ‘‰ [Course](https://www.udemy.com/course/n8n-automation-mastery-build-ai-powered-enterprise-ready/?referralCode=2EAE71591D3BEB80F2CC)\n\n---\n\n## ๐Ÿ”‘ Nodes of Interest\n\n- **On Form Submission (Trigger)**\n - Entry point for brand details and query input\n\n- **HTTP Request (Tavily API)**\n - Fetches latest news based on the query\n\n- **Generate Draft Topics (AI)**\n - Creates newsletter title + 3 key topics using LLM\n\n- **Split Topics**\n - Breaks topics into individual items for processing\n\n- **Generate Newsletter Content (AI)**\n - Writes detailed content for each topic with sources\n\n- **Merge Content Pieces**\n - Combines all sections into one dataset\n\n- **AI Agent (Brand Analyzer)**\n - Extracts brand colors from website HTML\n\n- **Information Extractor**\n - Extracts logo URL from brand website\n\n- **Convert Newsletter to HTML (AI)**\n - Formats content into styled email HTML using brand theme\n\n- **Google Sheets**\n - Saves generated newsletter drafts\n\n- **Gmail Node**\n - Sends newsletter to all subscribers\n\n---\n\n## ๐Ÿ” What Youโ€™ll Need (Credentials)\n\n- **OpenAI API Key**\n - Used for all AI content generation (GPT-4.1-mini)\n\n- **Tavily API Key**\n - For fetching real-time news data\n\n- **Google Sheets OAuth**\n - To store newsletter drafts & manage subscribers\n\n- **Gmail OAuth**\n - To send emails to subscribers\n\n---\n\n## โš™๏ธ Recommended Settings & Best Practices\n\n- Use **structured output parsers** to ensure consistent AI responses \n- Keep **topic count fixed (3)** for predictable flow \n- Limit newsletter length to **โ‰ค 1000 words** for readability \n- Use **Split + Aggregate pattern** for scalable content generation \n- Maintain **strict prompt engineering** (system messages already optimized) \n- Always validate **real URLs for citations** (avoid hallucinations) \n- Use **Loop Over Items** for controlled email sending \n- Store drafts before sending (fail-safe logging)\n\n---\n\n## ๐ŸŽฏ Customization Ideas\n\n- Add **weekly automation trigger** (Cron node) instead of manual form \n- Integrate **Notion / Airtable** instead of Google Sheets \n- Add **unsubscribe & email tracking (SendGrid / Mailchimp)** \n- Personalize emails using **user segmentation (AI-based)** \n- Add **multi-language newsletter generation** \n- Include **image generation (DALLยทE / Stable Diffusion)** for visuals \n- Connect to **Telegram / WhatsApp bot** for distribution \n- Add **analytics dashboard** for open/click rates \n\n---\n\n## ๐Ÿท๏ธ Tags\n\nAI Automation, n8n Workflow, Newsletter Automation, Email Marketing, GPT Integration, LangChain, Tavily API, No-Code AI, Content Generation, Marketing Automation, GenAI Workflow, AI Agents\n\n---","workflow":{"id":"nli8XpsbjHbI26d1","meta":{"instanceId":"4764540811cbb8d2e1efff249fe019f120efdfc1d1ad5d0e40382bf91ca0b3dc","templateCredsSetupCompleted":true},"name":"AI Newsletter Automation Workflow","tags":[],"nodes":[{"id":"f97f8aad-e674-4c9a-8ac1-528785ff2a79","name":"Structured Output Parser","type":"@n8n/n8n-nodes-langchain.outputParserStructured","position":[1008,544],"parameters":{"schemaType":"manual","inputSchema":"{\n \"type\": \"object\",\n \"required\": [\"title\", \"topics\"],\n \"properties\": {\n \"title\": {\n \"type\": \"string\",\n \"description\": \"A short, descriptive title\"\n },\n \"topics\": {\n \"type\": \"array\",\n \"description\": \"An array of exactly three topics\",\n \"minItems\": 3,\n \"maxItems\": 3,\n \"items\": {\n \"type\": \"string\"\n }\n }\n },\n \"additionalProperties\": false\n}"},"typeVersion":1.3},{"id":"0b8c2f23-f7a1-42df-a95b-5c4aac01b334","name":"Structured Output Parser1","type":"@n8n/n8n-nodes-langchain.outputParserStructured","position":[3232,368],"parameters":{"schemaType":"manual","inputSchema":"{\n \"type\": \"object\",\n \"properties\": {\n \"subject\": {\n \"type\": \"string\",\n \"description\": \"the email subject\"\n },\n \"content\": {\n \"type\": \"string\",\n \"description\": \"the newsletter content\"\n }\n },\n \"required\": [\"subject\", \"content\"]\n}"},"typeVersion":1.3},{"id":"2f7807f3-84ab-4980-8afd-fc063434ab41","name":"Generate Draft Topics (AI)","type":"@n8n/n8n-nodes-langchain.agent","position":[864,320],"parameters":{"text":"={{ $json.results.map(item => JSON.stringify(item,null,5)).join('\\n\\\\n') }}","options":{"systemMessage":"# Overview\nYou are an expert newsletter planner. You will receive three articles from the past week. Your job is to come up with a creative and fun title as well as the main topics for this newsletter.\n\n## Instructions\nThe newsletter should flow nicely, feel informative, and holistic. The topics should be 5-6 words."},"promptType":"define","hasOutputParser":true},"typeVersion":2.2},{"id":"3c6aae50-ffdb-4a21-a3f3-7760fef62eb9","name":"Split Topics","type":"n8n-nodes-base.splitOut","position":[1216,320],"parameters":{"options":{},"fieldToSplitOut":"output.topics"},"typeVersion":1},{"id":"94708b0f-eb07-40e8-9bbd-fa253ef6f1de","name":"Generate Newsletter Content (AI)","type":"@n8n/n8n-nodes-langchain.agent","position":[1664,320],"parameters":{"text":"=Topic {{ $json.query }}\n\nResearch:\n{{ $json.results.map(item => JSON.stringify(item,null,5)).join('\\n\\\\n') }}","options":{"systemMessage":"=# Overview\nYou are a professional newsletter section writer. Your only task is to write one standalone section of a newsletter.\n\n## Instructions\n- Always include a clear section heading followed by the section content.\n- Do not write an overall title, introduction, or conclusion.\n- Write in a professional, expert, and engaging tone suitable for a business newsletter.\n- If you reference facts, data, or quotes, you must cite your sources and provide the actual clickable URLs.\n- Do not invent citationsโ€”only include real, verifiable sources.\n- Keep the section concise, well-structured, and easy to read."},"promptType":"define"},"typeVersion":2.2},{"id":"ab67a2b7-553a-4134-ac4a-ba2a768e14e8","name":"Merge Content Pieces","type":"n8n-nodes-base.aggregate","position":[1968,320],"parameters":{"options":{},"fieldsToAggregate":{"fieldToAggregate":[{"fieldToAggregate":"output"}]}},"typeVersion":1},{"id":"7ac35b41-ce45-4bd3-9bff-f8aa926b1f6f","name":"Convert Newsletter to HTML (AI)","type":"@n8n/n8n-nodes-langchain.agent","position":[3088,160],"parameters":{"text":"=Title: {{ $('Generate Draft Topics (AI)').item.json.output.title }}\n\nSections: {{ $('Aggregate').item.json.output[2].output.join(\"\\n\\n\\n\")}}","options":{"systemMessage":"=You are an expert newsletter editor and visual designer.\nMerge exactly three provided sections into a cohesive, email-ready HTML body that maintains a consistent professional layout, while adapting only the text colors according to the provided brand color theme.\n\n๐ŸŽฏ Objectives\n\nRefine clarity, coherence, and tone across all sections.\n\nMaintain a friendly, modern, Gen Zโ€“aligned voice thatโ€™s professional yet approachable.\n\nOnly text colors (headings, paragraphs, links, footer text) should dynamically adapt to the provided color theme.\n\nPreserve the original layout, structure, padding, and overall visual hierarchy exactly as provided.\n\nEnsure strong readability, balance, and flow.\n\nKeep total content โ‰ค 1000 words (hard limit). Avoid filler or redundant text.\n\nEnd every email with a friendly, brand-colored footer.\n\n๐ŸŽจ Brand Text Color Adaptation Rules\n\nUse the color theme study provided by the workflow, which typically includes:\n\nVariable\tDescription\nprimary_color\tHighlight / heading color\nsecondary_color\tBody and paragraph text color\naccent_color\tLinks and buttons\nbackground_color\tOverall background tone\n\nโœ… Important: Only apply these to text elements.\nDo not alter layout properties such as background, borders, padding, or container structure.\n\n๐Ÿงฑ Fixed Layout Template\n\n\n
\n\n
\n \"Company\n
\n\n

\n {{ $('On form submission').item.json['Brand Name'] }} Newsletter โœจ\n

\n

Hi {{ $json.Name }},

\n \n \n \n

\n ยฉ {{ $now.format('yyyy') }} {{ $('On form submission').item.json['Brand Name'] }} | Built with ๐Ÿ’š for our community
\n Stay curious. Stay creative. ๐Ÿš€\n

\n
\n\n\n๐Ÿ–‹ Element Styling (Only Text Color Adapts)\nElement\tStyle\n

\tfont-size:21px; color: {{ $('Aggregate').item.json.output[1].output.primary_color }}; margin-top:28px; margin-bottom:12px; font-weight:600;\n

\tfont-size:18px; color: {{ $('Aggregate').item.json.output[1].output.secondary_color }}; margin-top:22px; margin-bottom:10px; font-weight:500;\n

\tfont-size:16px; margin-bottom:18px; color: {{ $('Aggregate').item.json.output[1].output.secondary_color }};\n