Gmail Support Email Classifier (Returns, Warranty, Quotes) with Claude

Automatically label support emails in Gmail using Claude

Stop manually sorting incoming support messages. This n8n workflow monitors your Gmail support inbox, uses Anthropic Claude to classify each new email as Returns, Warranty, Quotes, or Other, and then applies the matching Gmail label automatically.

What this workflow does

Designed for n8n automation and email triage, the workflow runs on a schedule and performs the following steps:

• Triggers every minute when Gmail detects a new email matching your configured support search query.
• Extracts the email content by sending the email subject and body text to Anthropic Claude via a text classifier.
• Classifies the email into one of these categories: Returns, Warranty, Quotes (with a fallback to Other when no category matches).
• Applies the correct Gmail label:
  • Adds the Returns label when classified as Returns.
  • Adds the Warranty label when classified as Warranty.
  • Adds the Quotes label when classified as Quotes.
  • Adds the Other label when no category matches.

Use cases

• Route customer requests for returns and warranty support to the right workflow queue.
• Automatically tag quote requests so sales or support teams can review them faster.
• Reduce inbox clutter by grouping unrecognized messages under a consistent Other label.

Technical details

• n8n Gmail Trigger watches your support inbox using your search query (e.g., to:yourname+support@gmail.com).
• Anthropic Claude (via an Anthropic credential/API key) classifies the subject + body text.
• Text classification is handled by n8nn8n-nodes-langchain:Text Classifier and model calls via n8nn8n-nodes-langchain:LM Chat (Anthropic Claude).
• Gmail label actions apply the Returns, Warranty, Quotes, or Other labels.

Setup note: Create the Gmail labels (Returns, Warranty, Quotes, Other), connect your Gmail account in the Trigger and label steps, and choose the Claude model in the Anthropic Chat Model node.