Automatic Gmail unsubscribe detection with AI and Google Sheets contact management
Automatically detect unsubscribe replies in your outreach emails and clean your Google Sheets contact list; keeping your domain reputation and deliverability strong.
🎯 Who it’s for
This template is designed for freelancers, lead generation specialists, and outreach managers; particularly those running email outreach campaigns for clients or personal lead-gen projects.
If you send cold emails, manage multiple lead lists, or handle outreach at scale, this workflow helps you automatically manage unsubscribe requests to maintain healthy email deliverability and protect your domain reputation.
⚙️ How it works
- Trigger: The workflow starts when a new reply is received in your Gmail inbox.
- Intent Detection: The email text is analyzed using OpenAI to detect unsubscribe intent (“unsubscribe”, “remove me”, “opt out”, etc.).
- Normalization & Filtering: A Code node verifies the AI output for accuracy and ensures the result is standardized as either
"unsubscribe"or"keep". - Check & Update Sheets:
- If the contact requested removal, the workflow checks your Unsubscribe Sheet to see if they’re already listed.
- If not, the contact is added to the Unsubscribe Sheet and simultaneously removed from your Main Outreach Sheet.
- Optional Gmail Label: Adds an “Unsubscribe” tag in Gmail for quick visual tracking (optional customization).
🧩 Requirements
To run this workflow, you’ll need:
- Gmail Credentials → for reading incoming replies and applying labels.
- Google Sheets Credentials → to manage both the “Main” and “Unsubscribe” spreadsheets.
- OpenAI API Key → used for detecting unsubscribe intent from message text.
All credentials can be added through the n8n Credentials Manager.
🧠 How to Customize
- Polling Time: Adjust how often the Gmail Trigger checks for new replies (default: every 5 minutes).
- Sheets: Replace the linked Google Sheets IDs with your own. You can change sheet names and columns freely.
- Intent Rules: Modify the Code node to include additional unsubscribe phrases or alternate keywords.
- Optional Gmail Tagging: Enable or disable tagging for unsubscribed messages.
- Secondary Validation: Enable the second “If” check after the OpenAI node to double-confirm unsubscribe intent before moving contacts.
💡 Why this workflow matters
By automatically managing unsubscribe requests, you:
- Respect recipients’ opt-out preferences
- Reduce spam complaints
- Protect your domain reputation and increase deliverability
- Save hours of manual list cleaning
This is a must-have automation for anyone running cold email outreach, especially freelancers managing multiple client inboxes.
🪄 Quick Setup Tips
- Replace all
"Gmail account"and"Google Service Account account"credential references with your actual credentials. - Ensure your sheet has an EMAIL column for lookup.
- Test with a few mock replies before activating for production.
- Optional: Add a time-based trigger to run the sheet cleanup periodically.
Automatic Gmail Unsubscribe Detection with AI and Google Sheets Contact Management
This n8n workflow automates the process of identifying potential unsubscribe emails in your Gmail inbox, extracting relevant information using AI, and managing these contacts in a Google Sheet. It helps you keep track of senders you might want to unsubscribe from, without manually sifting through every email.
What it does
- Monitors Gmail: Continuously checks your Gmail inbox for new emails.
- Analyzes Email Content with AI: Uses an OpenAI Chat Model to analyze the content of each new email, specifically looking for indicators that the email is from a sender you might want to unsubscribe from (e.g., promotional content, newsletters).
- Filters based on AI Analysis: An "If" node evaluates the AI's output. If the AI determines the email is a potential unsubscribe candidate, the workflow proceeds.
- Extracts Key Information: A "Code" node processes the email and AI output to extract the sender's email address and potentially other relevant details.
- Manages Contacts in Google Sheets: Appends the extracted sender information (email, and potentially other details) to a designated Google Sheet, creating a centralized list of potential unsubscribe contacts.
- No Operation (False Path): If the AI does not identify the email as a potential unsubscribe candidate, the workflow takes a "No Operation" path, effectively doing nothing further with that email.
Prerequisites/Requirements
- n8n Instance: A running n8n instance (self-hosted or cloud).
- Gmail Account: A Gmail account connected as a credential in n8n.
- OpenAI API Key: An OpenAI API key configured as a credential in n8n for the "OpenAI Chat Model" node.
- Google Sheets Account: A Google Sheets account connected as a credential in n8n.
- Google Sheet: A pre-existing Google Sheet where the unsubscribe contacts will be stored. You'll need to specify the spreadsheet ID and sheet name in the "Google Sheets" node.
Setup/Usage
- Import the Workflow: Import the provided JSON into your n8n instance.
- Configure Credentials:
- Set up your Gmail Account credential.
- Set up your OpenAI API Key credential.
- Set up your Google Sheets Account credential.
- Configure Gmail Trigger:
- Select your Gmail credential.
- Specify the folder to watch (e.g., "INBOX").
- Adjust the "Check Interval" as needed.
- Configure OpenAI Chat Model:
- Select your OpenAI credential.
- Review and adjust the prompt to guide the AI in identifying unsubscribe candidates. The current prompt should be designed to extract relevant information or classify emails.
- Configure Code Node:
- Review the JavaScript code to ensure it correctly extracts the desired information (e.g., sender email) from the Gmail and OpenAI node outputs. You might need to adjust the paths based on your specific AI output.
- Configure If Node:
- Ensure the conditions in the "If" node accurately evaluate the output from the "Basic LLM Chain" (OpenAI) node to determine if an email is a potential unsubscribe candidate.
- Configure Google Sheets Node:
- Select your Google Sheets credential.
- Enter the Spreadsheet ID of your target Google Sheet.
- Enter the Sheet Name where the data will be appended.
- Map the data from the previous "Code" node to the correct columns in your Google Sheet (e.g.,
{{ $json.senderEmail }}to an "Email" column).
- Activate the Workflow: Once configured, activate the workflow to start monitoring your Gmail inbox.
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