自动分类收件箱，为常见问题起草回复，紧急邮件转人工。
适用场景
Small businesses and solo founders receiving 50-200 emails per day who want to prioritize and automate routine responses.
前提条件
n8n, IMAP email access, OpenAI API key, Slack webhook, Google Sheets API
工作流图
用 n8n 搭建 AI 邮件分类助手
分步指南
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Email Trigger Node
Use the IMAP Email trigger node. Set polling to every 5 minutes. Configure to only process unread emails. Mark emails as read after processing to avoid duplicates.
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AI Classification Node
Use an HTTP Request node to call OpenAI with a classification prompt: 'Categorize this email into: URGENT, BILLING, SUPPORT, SALES, SPAM, OTHER. Also extract: sender intent, required action, response deadline.' Return as JSON.
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Routing Logic
Add a Switch node based on the AI classification. URGENT goes to Slack alert + draft response. BILLING goes to billing template auto-response. SUPPORT goes to knowledge base lookup. SPAM goes to trash. OTHER goes to inbox for manual review.
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Auto-Response Drafting
For SUPPORT and BILLING categories, use AI to draft a response: 'Draft a professional email response to this inquiry. Use our standard tone. Reference relevant policy if applicable.' Save draft in your email drafts folder for human review before sending.
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Analytics and Logging
Log all classifications and actions to a Google Sheet. Track: volume by category, auto-response rate, average response time, escalation rate. Generate a weekly summary report.