Auto-reply to emails using Google Gemini AI and SendGrid

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Built by Gilbert Onyebuchi Gilbert Onyebuchi
Created on June 05, 2026

Description

Transform your inbox into an intelligent assistant! This workflow automatically reads incoming emails, generates personalized AI responses using Google Gemini, and sends professional replies—all on autopilot.

How It Works:

Monitors Your Inbox - IMAP trigger checks for new emails
Smart Processing - Filters and validates incoming messages
AI Response - Google Gemini generates contextual, professional replies with conversation memory
Auto-Send - SendGrid delivers your response instantly

Perfect For:

B2B customer support automation
Lead qualification and response
FAQ handling
After-hours email coverage
Reducing response time from hours to seconds

Quick Setup (5 minutes):

Add your IMAP email credentials
Get free Google Gemini API key from aistudio.google.com
Configure SendGrid (or use any SMTP provider)
Customize AI prompt for your business
Activate and let it run!

Cost-Effective:

Google Gemini: Free tier available
SendGrid: Free up to 100 emails/day
Perfect for startups and small businesses

Customizable: Easily modify the AI prompt, add business logic, integrate with your CRM, or adjust response timing. The workflow is fully documented and beginner-friendly.

Need help customizing this for your specific use case? Looking for a collaborator on your n8n automation project?

Let's connect on LinkedIn: Send me a connection
I'm always open to collaborating on innovative automation solutions! 🤝

#email-automation #ai-chatbot #customer-support #gemini #sendgrid #b2b

Nodes Used (4)

AI Agent
@n8n/n8n-nodes-langchain.agent
Google Gemini Chat Model
@n8n/n8n-nodes-langchain.lmChatGoogleGemini
SendGrid
n8n-nodes-base.sendGrid
Simple Memory
@n8n/n8n-nodes-langchain.memoryBufferWindow