NEOPOLIS AKADEMY
Automated invoicing and reminders for unpaid invoices
Guided hands-on exercise to automate invoicing and chasing unpaid invoices. Demonstrates orchestration of tools (n8n, Google Sheets, Groq, Gmail, Telegram, PDFShift) to produce invoices, detect due dates and send reminders while preserving human checks.
View this course on Akademy ↗Enrolment and practical details are available on Neopolis Akademy.

What you will explore
Overview of automation flow linking Google Sheets, n8n and delivery services.
Using Groq and PDFShift to extract and format billing data and generate PDFs.
Logic for detecting unpaid invoices, segmenting reminders and sending via Gmail/Telegram.
Control mechanisms and manual breakpoints for human validation before actions.
STEP BY STEP
Course programme
01Automated invoicing and reminders for unpaid invoices
Automate invoice issuance and unpaid reminders with an n8n workflow. Combine Google Sheets, Groq, Gmail and PDFShift to generate invoices, detect overdue items and send automated reminders or Telegram alerts.
Objective: orchestrate invoicing and reminders to reduce manual debt follow‑up.
Environment setup: connect Sheets, Groq (analysis), Gmail, PDFShift and Telegram in n8n.
Stepwise build: generate PDF invoices, monitor due dates, apply reminder logic and send emails.
Security checkpoint: control mail access, compliance of outbound messages and document retention.
Explore this module on Akademy ↗Programme source: Neopolis Akademy. Original course page