Quick overview
Quick overview This workflow polls Gmail for labeled outreach replies, cleans and classifies each reply with Google Gemini, logs results to Google Sheets, and for actionable messages, creates a Gmail draft response and alerts a Slack channel with the draft link. How it works Triggers every minute when a new Gmail message arrives with the specified label. Fetches the full email content from Gmail and extracts sender, subject, and a cleaned reply body that removes quoted text. Sends the cleaned reply body to Google Gemini to classify it (Interested, Question, Objection, Not Interested, Auto-Reply) and generate a suggested reply. Parses the Gemini JSON output and falls back to a “Needs Manual Review” classification if the response cannot be parsed. Appends the email details, classification, confidence, reasoning, and suggested reply to a Google Sheets tracker. If the reply is classified as Interested or Question, creates a draft reply in Gmail and posts a Slack alert that links directly to the saved draft. Setup Connect your Gmail OAuth2 account and create a Gmail label and filter that applies it to inbound replies (for example, add -from:me to avoid matching your own sent emails). Add a Google Gemini (PaLM) API credential for the Google Gemini node. Connect your Google Sheets OAuth2 account, set the target spreadsheet/document ID, and ensure the sheet has columns matching the workflow’s mapped fields. Connect your Slack OAuth2 credential, set the target channel (for example, #outreach-replies), and invite the Slack bot/app to that channel. Customization To add or remove classification categories, edit the prompt in the Gemini node and update the IF condition on the routing node to match To alert on Objection replies, add Objection as a second condition on the routing node To adjust poll frequency, change the interval on the Gmail trigger Additional info This workflow strips Gmail's quoted reply content before classification, significantly improving AI accuracy compared to passing the full thread. The AI never sends emails automatically — all outbound messages go through human review via Gmail Drafts. Tested with Google Gemini 3 Flash. An n8n automation workflow template by Hassan.
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