Personalized B2B cold email sequence with GPT-4 + Gmail auto-reply detection
Ready for 3.0Ready for 3.0. This template uses no nodes that n8n 3.0 removes. No removed nodes, versions or helpers found. Static check, last run 2026-10-19.
Worth a look
- Gmail Trigger below v1.4 runs as v1.4 (drafts skipped, max emails per poll) (Gmail Reply Trigger)
Nodes used (13)
- OpenAI Chat Model
@n8n/n8n-nodes-langchain.lmChatOpenAi - Gmail Tool
n8n-nodes-base.gmailTool - Google Sheets
n8n-nodes-base.googleSheets - Gmail Trigger
n8n-nodes-base.gmailTrigger - If
n8n-nodes-base.if - Slack
n8n-nodes-base.slack - AI Agent
@n8n/n8n-nodes-langchain.agent - Google Sheets Trigger
n8n-nodes-base.googleSheetsTrigger - Merge
n8n-nodes-base.merge - Edit Fields (Set)
n8n-nodes-base.set - Error Trigger
n8n-nodes-base.errorTrigger - Wait
n8n-nodes-base.wait - Code
n8n-nodes-base.code
What it does
🎯 Automated B2B Cold Email Sequence with AI Personalization Stop manually sending follow-ups. This workflow automates your entire cold email outreach with AI-powered personalization, smart scheduling, and automatic reply detection. ✨ What It Does This workflow sends a perfectly-timed 3-email sequence to B2B prospects with: - AI-generated personalized emails adapted to each prospect's sector, company size, and role - Smart scheduling: Only sends Tuesday/Wednesday/Thursday at optimal times (~9AM with randomization) - Bilingual support: Auto-detects French or English prospects - Reply detection: Automatically stops the sequence when someone replies - Spam prevention: Randomized sending times, professional intervals - Full tracking: Updates Google Sheets with send status and reply detection - Slack notifications: Get alerted immediately when a hot lead responds 📊 Expected Results Based on real usage: - 10-15% reply rate (vs 3-8% for generic cold emails) - 2-5 hot leads per 30 prospects contacted - 90% time saved vs manual outreach - Professional delivery that preserves sender reputation 🎬 How It Works 1. Add prospect to Google Sheet (Email, Name, Company, etc.) 2. Workflow triggers automatically on new row 3. Time planning calculates optimal send dates (Tue/Wed/Thu only) 4. Email 1 (J0): AI generates introduction with value prop (80-120 words) 5. Wait 3 days 6. Email 2 (J+3): Follow-up with new angle or case study (70-90 words) 7. Wait 4 days 8. Email 3 (J+7): Final soft close, respectful exit (60-100 words) 9. Reply detection: Monitors Gmail → marks prospect "hot" → Slack alert → stops sequence 🚀 Perfect For - Sales teams doing B2B cold outreach - Agencies prospecting new clients - SaaS founders building their pipeline - Consultants/freelancers doing business development - Anyone tired of manual follow-ups and low response rates ⚙️ Requirements Required: - Google Sheets (free) - Gmail account (free) - OpenAI API key (~$0.50 per 100 emails) Optional: - Slack (for notifications) n8n version: Compatible with n8n 1.0+