Classify cold email replies and triage Gmail with Claude and Slack

Quick overview This workflow monitors Gmail for new email replies, uses Anthropic Claude to classify each reply and draft a suggested response, then routes interested replies to Slack and a Gmail draft while labeling all other replies in Gmail for triage. How it works 1. Triggers every minute when a new email reply is received in Gmail. 2. Loads configuration values such as your offer/voice context, Slack channel, and Gmail label IDs. 3. Sends the email details to Anthropic Claude to classify the reply, score confidence, summarize it, and draft a suggested response as structured JSON. 4. Routes the message by category so “interested” replies post an alert to Slack. 5. Creates a Gmail draft reply in the same thread using Claude’s suggested response. 6. For non-interested categories (not now, out of office, unsubscribe, referral, objection) and any unmatched output, adds the corresponding Gmail label to the incoming message. Setup 1. Add credentials for Gmail OAuth2, Anthropic API, and Slack OAuth in the respective nodes. 2. Update the “Config (edit me)” values with your offer/voice context, Slack channel name, and the Gmail label IDs for each category (notnow, outofoffice, unsubscribe, referral, objection, and review). 3. Create the required Gmail labels and copy their label IDs into the config so each category is applied correctly. Additional info Step-by-step guides: - Google (Gmail) for n8n → https://winflowai.com/blog/get-google-api-key-n8n/ - Anthropic (Claude) API key → https://winflowai.com/blog/get-claude-api-key/