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Newsletter summarization & briefing with Gmail, AI, Google Sheets & Email

Jan ZaiserJan Zaiser
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2/3/2026
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Your inbox is overflowing with daily newsletters: Public Affairs, ESG, Legal, Finance, you name it. You want to stay informed, but reading 10 emails every morning? Impossible.

What if you could get one single digest summarizing everything that matters, automatically?

❌ No more copy-pasting text into ChatGPT ❌ No more scrolling through endless email threads ✅ Just one smart, structured daily briefing in your inbox

Who Is This For

Public Affairs Teams: Stay ahead of political and regulatory updates—without drowning in emails. Executives & Analysts: Get daily summaries of key insights from multiple newsletters. Marketing, Legal, or ESG Departments: Repurpose this workflow for your own content sources.

How It Works

  1. Gmail collects all newsletters from the day (based on sender or label).
  2. HTML noise and formatting are stripped automatically.
  3. Long texts are split into chunks and logged in Google Sheets.
  4. An AI Agent (Gemini or OpenAI) summarizes all content into one clean daily digest.
  5. The workflow structures the summary into an HTML email and sends it to your chosen recipients.

Setup Guide

• You’ll need Gmail and Google Sheets credentials. • Add your own AI Model (e.g., Gemini or OpenAI) with an API key. • Adjust the prompt inside the “Public Affairs Consultant” node to fit your topic (e.g., Legal, Finance, ESG, Marketing). • Customize the email subject and design inside the “Structure HTML-Mail” node. • Optional: Use Memory3 to let the AI learn your preferred tone and style over time.

Cost & Runtime

Runs once per day. Typical cost: ~$0.10–0.30 per run (depending on model and input length). Average runtime: <2 minutes.

Newsletter Summarization & Briefing with Gmail, AI, and Google Sheets

This n8n workflow automates the process of summarizing newsletters received via email using AI, storing these summaries in a Google Sheet, and then sending out a daily briefing email. It helps you stay on top of your subscriptions without manually sifting through every email.

What it does

  1. Triggers Daily: The workflow runs on a scheduled basis (e.g., daily).
  2. Fetches Emails: It connects to your Gmail account to fetch unread emails.
  3. Filters for Newsletters: It identifies emails that are likely newsletters (e.g., based on sender, subject, or content).
  4. Extracts Content: For each identified newsletter, it extracts the relevant content.
  5. Summarizes with AI: It uses a LangChain Google Gemini Chat Model to generate a concise summary of the newsletter content.
  6. Stores Summaries: The AI-generated summaries are then appended to a specified Google Sheet, along with other relevant details like the newsletter's subject and sender.
  7. Compiles Briefing: It gathers all the new summaries from the Google Sheet.
  8. Sends Briefing Email: Finally, it sends a briefing email containing all the summarized newsletters to a designated recipient.

Prerequisites/Requirements

  • n8n Instance: A running instance of n8n.
  • Gmail Account: Configured with n8n credentials to read emails.
  • Google Sheets Account: Configured with n8n credentials to write data to a spreadsheet.
  • Google Gemini API Key: For the LangChain Google Gemini Chat Model to perform summarization.
  • SMTP Credentials: For the "Send Email" node, if not using Gmail for sending.

Setup/Usage

  1. Import the Workflow: Import the provided JSON into your n8n instance.
  2. Configure Credentials:
    • Gmail Node: Set up your Gmail OAuth2 credentials to allow n8n to access your emails.
    • Google Sheets Node: Set up your Google Sheets OAuth2 credentials to allow n8n to write to your spreadsheet.
    • Google Gemini Chat Model Node: Provide your Google Gemini API key.
    • Send Email Node: Configure your SMTP credentials or use your Gmail credentials if you want to send emails via Gmail.
  3. Customize Nodes:
    • Schedule Trigger: Adjust the schedule to your preferred frequency (e.g., daily at a specific time).
    • Gmail Node: Configure the search query to identify your newsletters (e.g., sender email addresses, subject keywords, labels).
    • LangChain Code / Google Gemini Chat Model: You might want to refine the prompt for summarization to get the desired output quality.
    • Google Sheets Node: Specify the Spreadsheet ID and Sheet Name where the summaries should be stored. Define the columns for subject, sender, summary, etc.
    • Edit Fields (Set) Node: Adjust any data transformations needed before writing to Google Sheets or sending the email.
    • Code Node: This node likely contains custom logic for processing email content or formatting the briefing. Review and adjust as needed.
    • Send Email Node: Configure the recipient email address, subject line, and the body of the briefing email.
  4. Activate the Workflow: Once configured, activate the workflow to start receiving your automated newsletter briefings.

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