Automated Invoice Follow-Up System
Automated accounts receivable system built in n8n. Reads invoices from Google Sheets, calculates overdue days, and sends staged payment reminder emails via Gmail — pausing when clients reply and escalating aged accounts to a human. Built to reduce DSO for contractors and small businesses.
A glimpse of the actual build.
Watch it run end to end.
Four minutes through the live build: the morning check reading the invoice tracker, the switch sorting every overdue account into first notice, follow-up or escalation, and the reminders going out on their own. Nothing staged — this is the system working a real sheet.
