AI-Powered Gmail Reply Draft Automation

September 15, 2025

Aladuddin Aladin

This n8n workflow automatically drafts email replies in Gmail using OpenAI’s Assistant. It checks Gmail for new messages with specific trigger labels, retrieves the latest email in the thread, sends its content to OpenAI to generate a context-aware reply, converts the AI response to an HTML email draft, inserts it into the original Gmail thread, and then removes the trigger label to avoid duplicate processing. Perfect for streamlining customer support, sales outreach, or personal inbox management.

Features:

  1. Automated Gmail Scanning: Uses a schedule trigger to regularly check Gmail threads with specific labels.
  1. Context-Aware AI Responses: Leverages OpenAI Assistant to craft smart, conversational replies based on incoming emails.
  1. Draft Creation in Gmail: Builds and encodes messages in RFC standard, then inserts AI-generated drafts directly into the corresponding Gmail thread.
  1. Label Management: Automatically removes the trigger label after the draft is inserted, ensuring smooth one-time processing.
  1. Customizable & Scalable: Modify labels, intervals, and prompts to match your specific workflow or business needs.
  1. Built-in Safety: Keeps all drafts in Gmail for human review before sending, providing control and oversight.

    About the author

    Alauddin Aladin is an AI Automation expert helping businesses streamline operations, boost productivity, and scale effortlessly using tools like Make.com and n8n. With over a decade of experience in digital systems and automation strategy, Alauddin empowers entrepreneurs to save time and grow smarter through intelligent workflows and AI-driven solutions.

    Leave a Comment