Recover overdue invoices with GPT-4o-mini, Gmail, Google Sheets and Slack

n8n · Marketing · checked 2026-10-28

Brand hub

Quick overview This workflow runs every 24 hours to read overdue invoices from Google Sheets, uses OpenAI (GPT-4o-mini) to draft personalized recovery emails and determine escalation, sends emails via Gmail, logs outcomes back to Google Sheets, and posts status and error alerts to Slack. How it works Runs every 24 hours on a schedule trigger. Reads invoice rows from a Google Sheets “invoices” tab

At a glance

Brand
n8n
Jobs
Marketing
Sources
1

Dimensions

Sources

Last checked 2026-10-28. Description source: harvest.