Customer Support AI Agent for Gmail
This n8n template demonstrates how to build an AI-powered customer support workflow that automatically handles incoming Gmail messages, classifies them, finds answers from your knowledge base, and sends a personalized reply.
Who’s it for
- SaaS founders or teams who want to automate customer support.
- Freelancers and solopreneurs who receive repetitive customer queries.
- Companies that want to reduce manual email triage and improve response times.
How it works / What it does
- Trigger: A new email arrives in Gmail.
- Classification: The workflow uses a text classifier to decide whether the email is customer support-related or not.
- If not, it’s ignored.
- If yes, it proceeds.
- AI Agent:
- Queries a knowledge base (vector database with OpenAI embeddings).
- Retrieves the most relevant answer.
- Drafts a reply using AI (OpenAI or Google Gemini model).
- Post-processing:
- Labels the email in Gmail for organization.
- Sends a reply automatically.
This ensures that your customers get timely, relevant responses without manual intervention.
How to set up
- Import this template into your n8n account.
- Connect your Gmail account in the Gmail Trigger, Label, and Reply nodes.
- Connect your AI model provider (OpenAI or Google Gemini).
- Configure the knowledge base embeddings (upload your docs/FAQ into the vector database).
- Activate the workflow — and your AI customer support agent is live!
Requirements
- n8n account.
- Gmail account (with API access enabled).
- OpenAI or Google Gemini account for LLM and embeddings.
- Knowledge base data (FAQ, documentation, or past tickets).
- Google Drive account for auto update your vector database(with API access enabled).
How to customize the workflow
- Knowledge Base: Replace or expand with your own company docs, FAQs, or past conversations.
- Classification Rules: Train or adjust the classifier to handle more categories (e.g., Sales, Partnership, Technical Support).
- Reply Style: Customize AI prompts for tone — professional, casual, or friendly.
- Labels: Change Gmail labels to match your workflow (e.g., “Support,” “Sales,” “Priority”).
- Multi-language: Add translation steps if your customers speak different languages.
This template saves you hours of manual email triage and ensures your customers always get quick, accurate responses.