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Draft Google review reply emails with Gmail, OpenAI, and Google Sheets

by 43 Sunsetsadapted from n8n official workflow galleryUpdated Aug 2026
RequiresBBasic LLM ChainGmailGmailGoogle SheetsGoogle SheetsOpenAI Chat ModelOpenAI Chat ModelStructured Output ParserStructured Output Parser
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Watch Gmail for new review alertsWatch Gmail for…Se⚙️ Your settingsCheck the ledger (already handled?)Check the ledge…IfOnly continue if it is newOnly continue i…NOAlready handled — stopAlready handled…CLDraft the reply (AI)Draft the reply…OpenAI model (bring your own key)OpenAI model (b…OPForce clean JSON outputForce clean JSO…Email the draft to the ownerEmail the draft…Log to the reply ledgerLog to the repl…123456789
1/5
STEPS · 9
Starts on a Gmail event

Quick Overview This workflow monitors Gmail for Google Business Profile “new review” alert emails, uses OpenAI to extract the rating and review text and draft a policy-safe reply, then emails the draft to you and logs the review and reply draft to Google Sheets. How it works Triggers when a new Google Business Profile review notification email arrives in Gmail. Looks up the email’s message ID in a Google Sheets ledger to prevent drafting duplicate replies. Sends the email content and your configured business details to OpenAI to extract the rating, reviewer first name, and review text and generate a reply draft as structured JSON. Emails you a formatted message containing the review excerpt, the suggested reply, and a link to your Google reviews page. Appends a new row to Google Sheets with the message ID, extracted review details, the reply draft, a timestamp, and a “draft-sent-to-owner” status. Setup Connect your Gmail account and ensure Google review alerts are delivered from [email protected]. Add an OpenAI API key/credential and select the chat model in the OpenAI node.

Tags

n8nreference-onlychain-llmgmailgoogle-sheetslm-chat-open-aioutput-parser-structured
Connects
BBasic LLM ChaingmailGmailsheetsGoogle SheetsopenaichatmodelOpenAI Chat ModelstructuredoutputparserStructured Output Parser
CategoryAI Automation
Triggermanual
Complexitycomplex
Nodes10
AddedJul 7, 2026

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