{"product_id":"n8n-workflow-chase-overdue-quickbooks-invoices-w-claude-gmail-slack","title":"n8n Workflow: Chase Overdue QuickBooks Invoices w\/ Claude, Gmail, Slack","description":"\u003ch3\u003eAutomatically chase overdue QuickBooks Online invoices—with Claude-written emails and Slack visibility\u003c\/h3\u003e\n\u003cp\u003eThis n8n workflow runs every weekday to find overdue \u003cstrong\u003eQuickBooks Online\u003c\/strong\u003e invoices, chooses the correct reminder stage using your \u003cstrong\u003eGoogle Sheets\u003c\/strong\u003e logs and do-not-chase list, drafts or sends \u003cstrong\u003eGmail\u003c\/strong\u003e reminders with opening\/closing text written by \u003cstrong\u003eAnthropic Claude\u003c\/strong\u003e, and posts escalation alerts and daily summaries to \u003cstrong\u003eSlack\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eWhat this workflow does\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSchedules \u0026amp; testing:\u003c\/strong\u003e Executes every weekday at \u003cstrong\u003e9:00\u003c\/strong\u003e (or can be run manually with built-in sample data for testing).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinds what’s overdue:\u003c\/strong\u003e Pulls unpaid \u003cstrong\u003eQuickBooks Online\u003c\/strong\u003e invoices past the due date.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStage selection \u0026amp; skipping rules:\u003c\/strong\u003e Reads the \u003cstrong\u003eReminder log\u003c\/strong\u003e and \u003cstrong\u003eDo not chase\u003c\/strong\u003e tabs in Google Sheets, then applies stage rules, cooldown, minimum balance, and per-run limits to decide who gets reminded, who is escalated, and what’s skipped.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClaude-assisted email text:\u003c\/strong\u003e Uses \u003cstrong\u003eAnthropic Claude\u003c\/strong\u003e to write the email opening and closing for the selected stage, then assembles a plain-text message including the invoice table, totals, and payment instructions.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGmail send\/draft behavior:\u003c\/strong\u003e Sends stage 1–3 reminders via \u003cstrong\u003eGmail\u003c\/strong\u003e (or saves based on your configured send mode). Final notices are always saved as Gmail drafts for review.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSlack alerts \u0026amp; reporting:\u003c\/strong\u003e Posts one-time Slack alerts when invoices pass the escalation threshold, and publishes a daily Slack summary of totals, reminders, escalations, and skipped items.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAudit trail in Google Sheets:\u003c\/strong\u003e Appends one row per affected invoice to the Reminder log (sent\/drafted\/failed reminders and Slack escalations).\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eUse cases\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eSaaS finance teams automating \u003cstrong\u003eoverdue invoice reminders\u003c\/strong\u003e with consistent, staged messaging.\u003c\/li\u003e\n  \u003cli\u003eOperations\/automation engineers needing a reliable \u003cstrong\u003eQuickBooks Online + Gmail + Slack\u003c\/strong\u003e escalation workflow.\u003c\/li\u003e\n  \u003cli\u003eCompanies that want human review before final dunning by saving final notices as \u003cstrong\u003eGmail drafts\u003c\/strong\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical details\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIntegrations:\u003c\/strong\u003e \u003cstrong\u003eQuickBooks Online\u003c\/strong\u003e, \u003cstrong\u003eGoogle Sheets\u003c\/strong\u003e, \u003cstrong\u003eGmail\u003c\/strong\u003e, \u003cstrong\u003eSlack\u003c\/strong\u003e, \u003cstrong\u003eAnthropic (Claude)\u003c\/strong\u003e\n\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003en8n nodes referenced:\u003c\/strong\u003e if, set, code, no op, gmail, slack\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"N8N Commerce","offers":[{"title":"Default Title","offer_id":46192817733811,"sku":"N8N-20684","price":28.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0749\/6279\/6723\/files\/QeWorU91d3AhQ3J-QkFsx_W6SOg89D.png?v=1791536705","url":"https:\/\/buyflowscripts.com\/products\/n8n-workflow-chase-overdue-quickbooks-invoices-w-claude-gmail-slack","provider":"N8N Commerce","version":"1.0","type":"link"}