Chase Unpaid Invoices from One Sheet
Keep open invoices in one sheet and send firmer reminders on a schedule, each one approved by you.
Run It With Us
Want This Running in Your Business?
Less time writing chasing emails by hand.
We set it up on your own accounts, test it with you and hand it over working. You approve what the bots send.
$1,500 founding price for the first 3 setups (normally $2,500). $300 deposit, counted toward it.
Read the full blueprint: who to start with, checked tool prices, a weekly plan and when to stop.
How it works
- Unpaid Invoice Reminder Flow: Drafts reminders by stage from the sheet
- You: Approve each reminder before it sends
Estimated Value to Your Business: $$ Medium Our rough estimate of value to the business, not a promise or income claim
Our estimate. Assumes you already invoice on terms and spend time chasing late payers by hand.
Value tiers are our rough estimates (labelled Estimate) of relative value to the business, each with its assumption. They are not promises, income claims or advice. Results depend on your market, offer and effort.
Who it's for
- Agencies, consultants, trades and B2B suppliers that invoice on terms.
How it helps your business
- Less time writing chasing emails by hand.
- Overdue invoices get a consistent follow-up instead of an occasional one.
The bot stack
Drafts polite, escalating Gmail reminders from a Google Sheet.
n8n
Gmail
Google Sheets
OpenAI Get it Cost to Run Our rough estimate of value to the business, not a promise or income claim
A Grok Bot plan, plus an account on each tool the stack connects to: n8n, Gmail, Google Sheets, OpenAI. We show a price only when we have checked it on a public page, with the source and date below.
- V n8n, Community Edition (self-hosted) or Cloud Starter: Community: $0 licence. Starter: 20 euros a month billed annually. Pro: 50 euros a month billed annually. Source, checked 2026-10-27.
- V Gmail, No cost plan: $0, 15GB storage per user Source, checked 2026-10-27.
- V Google Workspace (optional business email), Business Starter: $7 per user a month list price. Google shows $3.50 for new customers for 12 months (offer dated 10 Nov 2026 to 10 Feb 2027). Source, checked 2026-10-27.
- V Google Sheets, Free with a Google account: $0 with a Google account Source, checked 2026-10-27.
- V OpenAI API, Pay as you go, gpt-4.1-mini: $0.40 per 1M input tokens, $1.60 per 1M output tokens Source, checked 2026-10-27.
- V QuickBooks Online (if you already use it), Simple Start: $38 a month list price; shown at $19 a month for 3 months as an offer. Includes invoice reminders. Source, checked 2026-10-27.
List prices first; offer prices end. Costs and break-even in the blueprint.
Steps
- Export open invoices into a Google Sheet.
- Import the n8n template and connect Gmail, Sheets and OpenAI.
- Approve the first ten drafts by hand.
- Schedule twice-weekly runs with an approval step.
Guardrails
- Every reminder stays a draft until you approve it.
- Chase only amounts that are genuinely owed and past due.
- This is admin help, not legal or financial advice.
Sources
Labels: V verified by us on the linked page, Estimate our own estimate, A the creator's own claim. This page is our own write-up; the bots belong to their creators.
Related guide: Grok Bot for Small Business