Gmail Inquiry Auto-Reply Drafts (Stock & Visits) with Claude Haiku

Instant Gmail Inquiry Auto-Reply Drafts—Stock & Store Visits, Powered by Claude Haiku

Stop manually answering every inquiry email. This n8n workflow checks your Gmail inbox every 5 minutes, uses Anthropic Claude (Haiku) to classify each message as a Stock or Store visit request, then drafts a ready-to-send reply in the same thread—complete with data-table lookup and follow-up labeling.

What this workflow does

• Runs on a 5-minute schedule using a schedule trigger.
• Fetches up to 10 recent inquiry emails sent to your configured inquiry address that are not already labeled as drafted or marked for human review.
• Classifies each email with Anthropic Claude (Haiku) into one of three outcomes: Stock inquiry, Store visit request, or Other.
• For Stock inquiries: Claude extracts the product category, the workflow matches it against an n8n Data Table, and Claude drafts a reply using only the returned stock and pricing details.
• For Store visit requests: Claude extracts the requested date/time, the workflow looks up available slots in another n8n Data Table, and the draft reply lists availability (or notes fully booked/unavailable).
• Creates a Gmail draft reply in the original thread and applies an ai-drafted label for tracking.
• Routes non-matching inquiries by labeling them needs-human for manual handling.

Use cases

• Reduce response time for incoming sales questions by automatically drafting stock/pricing replies.
• Handle appointment requests with slot lookups and availability-based drafts.
• Maintain inbox hygiene using labels to avoid duplicate drafts and to flag messages that require human judgment.

Technical details

• n8n nodes/integrations: schedule trigger, Gmail, Data Table lookups, Anthropic Claude (Haiku) for classification and drafting, plus workflow utilities like Set, Aggregate, and Sticky Note.
• Required setup: connect Gmail credentials, add an Anthropic API credential for Claude, and populate two n8n Data Tables (products/stock and visit slots).