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Automated Gmail classification & response system with GPT and WhatsApp alerts

Nabin BhandariNabin Bhandari
1174 views
2/3/2026
GitHubData ExportAutomationIssuesCSV
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This n8n template uses AI to automatically classify incoming Gmail messages into five categories and route them to the right people or departments. It can also reply automatically and send WhatsApp alerts for urgent or relevant messages. This helps ensure high-priority emails never get missed, while other messages are handled efficiently.

##How It Works

  1. Trigger A new email in Gmail triggers the workflow.

  2. Classification (OpenAI GPT) The email is analyzed by an OpenAI GPT model and classified into one of:

High Priority Customer Support Promotion Finance/Billing Random/Other

  1. Conditional Logic & Actions High Priority → Create draft reply + send WhatsApp alert.

Customer Support → Auto-reply + send WhatsApp confirmation alert.

Promotion → Summarize email + send WhatsApp promotional alert.

Finance/Billing → Forward to finance team + send WhatsApp finance alert.

Random/Other → Label and log only.

  1. Multi-Channel Output Responses are sent via Gmail. Alerts are sent via WhatsApp (or another compatible API).

##Setup Instructions Step 1: Gmail Authorization Add a Gmail node in n8n. Connect using OAuth2 and grant read/send permissions.

Step 2: OpenAI API Key Get your API key from OpenAI. Add it to n8n credentials for the OpenAI node.

Step 3: WhatsApp Integration Use your WhatsApp Business API or a provider like Twilio or 360Dialog.

Replace placeholders with your details:

[YOUR_WHATSAPP_NUMBER] [YOUR_FINANCE_TEAM_NUMBER] [YOUR_SUPPORT_TEAM_NUMBER]

Step 4: Import & Run Import the workflow JSON into n8n. Adjust prompts, labels, and routing logic as needed. Execute and monitor results.

##Good to Know Fully customizable — add or remove categories, adjust responses, and change alert channels.

Can be integrated with Slack, Discord, Trello, Notion, Jira, or CRM systems.

Scales easily across teams and departments.

##Requirements Gmail account with OAuth2 credentials set up in n8n

OpenAI API key for classification and content generation

WhatsApp (or other messaging service) integration

Optional: Slack, Notion, CRM, or accounting tool integrations

##Customization Ideas Create support tickets in Trello, Notion, or Jira from Customer Support emails.

Sync Finance emails with QuickBooks, Stripe, or Google Sheets.

Replace WhatsApp alerts with Slack or Discord messages.

Use Zapier/Make for cross-platform automations.

Automated Gmail Classification & Response System with GPT and WhatsApp Alerts

This n8n workflow automates the process of classifying incoming Gmail messages, generating AI-powered responses, and sending WhatsApp notifications for specific email types. It leverages OpenAI's language models for intelligent classification and response generation, ensuring efficient handling of your email communications.

What it does

This workflow streamlines your email management by:

  1. Monitoring Gmail: It continuously listens for new emails in your specified Gmail inbox.
  2. Classifying Emails with AI: For each new email, it uses an OpenAI Chat Model to classify the email's content into predefined categories.
  3. Generating AI Responses: Based on the classification, it can generate a tailored response using another OpenAI model.
  4. Sending WhatsApp Alerts: For emails classified as "Urgent" (or other critical categories you define), it sends a notification via WhatsApp Business Cloud.
  5. Replying to Emails: It then automatically sends the AI-generated response back to the original sender via Gmail.

Prerequisites/Requirements

To use this workflow, you will need:

  • n8n Instance: A running n8n instance.
  • Gmail Account: An active Gmail account configured as a credential in n8n.
  • OpenAI API Key: An API key from OpenAI with access to their chat models (e.g., gpt-3.5-turbo, gpt-4).
  • WhatsApp Business Cloud Account: A configured WhatsApp Business Cloud account and its associated credentials in n8n for sending notifications.

Setup/Usage

  1. Import the Workflow:
    • Copy the provided JSON code.
    • In your n8n instance, click "New" to create a new workflow.
    • Click the "Import" button (usually a cloud icon with an arrow pointing down) and paste the JSON code.
  2. Configure Credentials:
    • Gmail Trigger (Node 824) & Gmail (Node 356): Configure your Gmail OAuth2 credentials.
    • OpenAI Chat Model (Node 1153) & OpenAI (Node 1250): Configure your OpenAI API Key credential.
    • WhatsApp Business Cloud (Node 827): Configure your WhatsApp Business Cloud credentials.
  3. Customize AI Classification and Response (Nodes 1153, 1265, 1250):
    • OpenAI Chat Model (Node 1153): Adjust the prompt to define your desired email classification categories (e.g., "Urgent", "Support", "Sales", "General Inquiry").
    • Text Classifier (Node 1265): This node is likely intended to process the classification output from the OpenAI Chat Model. You might need to configure it to parse the AI's response and extract the classification.
    • OpenAI (Node 1250): Modify the prompt to guide the AI in generating appropriate responses for each classification type. You might use conditional logic (e.g., an IF node) after the Text Classifier to provide different prompts based on the classification.
  4. Configure WhatsApp Alerts (Node 827):
    • Adjust the message content and recipient phone number for your WhatsApp notifications. You'll likely want to add conditional logic before this node to only send alerts for specific email classifications (e.g., "Urgent").
  5. Activate the Workflow: Once all credentials and configurations are set, activate the workflow by toggling the "Active" switch in the top right corner of the n8n editor.

The workflow will now automatically process new emails, classify them, generate responses, and send WhatsApp alerts as configured.

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