Built an automated invoice follow-up system for QuickBooks + Gmail so sharing the blueprint

Hey everyone I built a scenario that runs daily, pulls overdue invoices from QuickBooks, and sends tiered reminder emails via Gmail automatically:

  • 1–7 days overdue → gentle nudge

  • 8–14 days overdue → firm follow-up

  • 15+ days overdue → final notice

Everything logs to Google Sheets with client name, amount, days overdue and timestamp. The routing took a while to get right but works cleanly now.

Packaged it up as a blueprint with a full setup guide for anyone who wants to skip the build on makehq.gumroad.com. Happy to answer any questions about how it works here too.