Invoice Chase Automation — Google Sheets → Gmail Reminders (Day 0 / +3 / +7) | n8n Workflow Template

Stop chasing accounts receivable by hand. Importable n8n workflows that send friendly Day 0 / +3 / +7 payment reminders from your Gmail using a Google Sheet — and stop when Paid or the client replies STOP.

WHAT IT IS

Escalating Invoice Chase Pack: n8n + Google Sheets + Gmail workflows that send friendly accounts-receivable payment reminders for invoices you already issued. Stages: Day 0 (due) / +3 / +7. Soft Coast / Softcoast.

WHO IT'S FOR

Freelancers and micro-agencies who track open invoices in a spreadsheet and remind clients from Gmail by hand today.

WHO IT'S NOT FOR

Anyone needing collections agency software, debt recovery, legal demand letters, or marketing blasts. This pack is friendly AR reminders only.

HOW IT WORKS

1. Import the n8n workflow JSON into your n8n

2. Connect Google Sheets + Gmail OAuth (you keep the credentials)

3. Copy the sample Sheet columns / CSV

4. Dry-run to yourself → activate schedule + STOP handler

TONE FENCE

Uses "final reminder," not collections language. Paid or STOP → chase halts for that invoice.

FEATURES

• Day 0 polite → Day +3 firm → Day +7 final reminder (friendly AR ladder)

• Stops when you mark Paid — no awkward nudge after the wire clears

• Client reply STOP (or optional unsubscribe) pauses remaining stages for that invoice

• Claim-before-send + cooldown — designed to avoid double-sends from overlapping runs

• Your Gmail + your Sheet — you OAuth in your own n8n (Cloud or self-host)

• Least-privilege chase send: Gmail gmail.send only on the main pack

• Includes STOP-reply workflow, optional signed unsubscribe webhook, sample CSV schema, setup docs

• One-time $149 DIY — not a subscription SaaS

WHAT'S INCLUDED

1. Main chase workflow JSON (invoice-chase) — stages 0 / +3 / +7

2. STOP-reply workflow → sets Status=Paused

3. Optional signed unsubscribe webhook workflow

4. Error-workflow stub (best-effort pause + notes on send failure)

5. Google Sheets column schema + sample CSV

6. Setup README (credentials, stages, STOP, security)

7. Threat / security notes + credential scrub script (for git mirrors)

NOT INCLUDED: Hosted n8n, Google Workspace, seller-side OAuth, DFY install, ongoing managed AR service.

PRICE

$149 one-time DIY download. Hosted n8n, Google Workspace, and done-for-you install are not included.

OPTIONAL DONE-FOR-YOU

Want Soft Coast to wire it in your n8n / Sheet / Gmail for you? After purchase, ask for DFY install (~$750 one-time). Pay link is sent only after you say yes — not bundled in this DIY pack.

REFUND POLICY

14-day refund if you have not successfully imported/activated the workflows in n8n (or if the download/files are materially defective and we cannot provide a working replacement within a reasonable time). No refund after successful import/activation and dry-run to a live mailbox, except where required by law or platform policy. Contact seller with order ID and a short description of the issue.

Soft Coast / Softcoast — friendly AR / payment reminders for invoices already issued. NOT collections, debt recovery, or legal action.