Gmail Support to FAQ n8n Workflow: Gemini, Notion & Slack

Turn Gmail support emails into live FAQs—automatically

This n8n workflow watches your Gmail support inbox, uses Google Gemini to convert incoming messages into structured FAQ entries, saves them to Notion, and posts updates to Slack. If an email looks urgent or sentimentally critical, it escalates and sends an acknowledgment reply to the sender—all while logging failures to Google Sheets.

What this workflow does

• Polls Gmail every minute for new support emails.
• Validates payload data: checks that the email contains an ID; invalid events are routed to a Google Sheets error log.
• Creates FAQ content with Google Gemini: sends the email subject and snippet to Gemini to generate a JSON response including an FAQ category, FAQ title, and short answer.
• Cleans and parses AI output, then saves the FAQ entry to a Notion database using your mapped properties (Title, Category, Answer, Summary).
• Shares updates in Slack: posts the FAQ title, category, summary snippet, and the Notion link.
• Second Gemini analysis for escalation signals: runs another Gemini step to detect urgency and sentiment, posts a Slack alert for flagged messages, and replies to the original sender via Gmail with the AI-generated answer.

Use cases

• Collect and transform support inquiries into a searchable FAQ knowledge base in Notion.
• Reduce manual triage by auto-posting new FAQs to Slack.
• Fast-track high-priority or negative-sentiment tickets with an escalation Slack alert and an immediate acknowledgment reply.

Technical details

• n8n nodes/actions referenced: Gmail, Google Gemini, Notion, Slack, Google Sheets, if, code, and a sticky note for workflow documentation.
• Setup includes connecting Gmail OAuth for polling and reply, adding Gemini credentials for both analysis steps, configuring Notion database ID + property mappings, and selecting Slack channels for announcements and critical alerts.