Stop being the one who has to ask for the money.
Log an invoice once. A day or two after it’s due, a reminder goes out automatically — gentle at first, firmer if it stays unpaid — until you mark it settled.
Real source code, yours to keep · Secure Stripe checkout · Works alongside any invoicing tool you already use
The follow-up you keep meaning to send
Log it once, forget it. `add-invoice` takes thirty seconds when you send the bill; the kit remembers to follow up so you don't have to.
Escalates automatically. Gentle at day 3, firmer at day 7, final notice at day 14 — configurable tiers, distinct tone for each.
Never nags twice for the same tier. Once a reminder tier goes out, it's marked — no accidental double-sends.
Stops the instant it's paid. `mark-paid` ends the chase for that invoice, permanently.
Works alongside any invoicing tool. This isn't a replacement for how you bill — it's the follow-up you keep meaning to send.
Fails loud, not silent. If your email isn't configured, it tells you exactly which invoice didn't go out.
A small, tested engine — not a platform
Real Python source. Bring your own email account, edit one config file, run the tests, put one line in cron.
- CLI
Three commands
`add-invoice` logs it. `mark-paid` stops it. `run-due` sends whatever's ready. That's the entire workflow.
- ESCALATION
Three tiers, one habit
Default 3/7/14 days overdue, each with its own tone — friendly reminder to final notice. Fully configurable per business.
- EMAIL
SMTP, any provider
Gmail with an app password, or any SMTP account you already have. No new service to sign up for.
- SMART
Jumps to the right tone
An invoice 20 days overdue with nothing sent yet gets the Final Notice, not a belated gentle nudge from three weeks ago.
- SAFE BY DEFAULT
Dry-run first
`run-due` without `--send` shows exactly what would go out and to whom, before anything actually sends.
- TESTED
23 automated tests
Escalation logic, idempotent tier tracking, credential fail-closed behavior, and a real end-to-end CLI run.
For anyone who’s ever let an unpaid invoice slide
- Freelancers and solo operators using any invoicing tool
- Small agencies without a dedicated bookkeeper chasing payment
- Anyone who's felt awkward asking a client to just pay the bill
- Owners comfortable running a terminal command and a cron job
Not a full invoicing platform — it doesn’t generate invoices or take payments. It follows up on the ones you’ve already sent.
Straight answers
- Does this replace my invoicing tool?
- No — this is a companion, not a replacement. Keep sending invoices however you already do (including SoloInvoice, if you use it); this kit just handles the follow-up you'd otherwise have to remember yourself.
- Do I need to know how to code?
- You need to be comfortable running terminal commands and editing one config file. The README walks through setup, plus wiring a daily cron job so run-due --send fires on its own.
- What does it cost to run?
- Essentially free — it uses an SMTP account you likely already have (Gmail, or any provider).
- Will this annoy my clients?
- Each invoice gets at most one reminder per tier — three total, at most, spread across two weeks. There's no daily nagging built in on purpose.
- What happens after I buy?
- Your success page unlocks an instant ZIP download — full source, the full test suite, and a setup README with a worked example.
Download once, yours permanently. No subscription, no upsell, no account to keep paying for.
14-day money-back guarantee · instant download · Refund policy
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