Overdue invoices, chased until they are paid.
Start chasing freeAutomatically, from day three. No card, and two active invoices on the free plan.
Harbour Lane Design
Invoice INV-1042 · due Sep 15, 2026
Change either one. Every reminder below rewrites itself.
invoiceshark
Day three.
The first reminder is deliberately soft. It opens by assuming the invoice slipped, because most of the time it did, and it goes out whether or not you remembered.
Friendly reminder: invoice from Harbour Lane Design is past due
To acmecorp@example.com
A quick reminder about your invoice
Hi Acme Corp,
Just a gentle nudge that the invoice below is now a few days past its due date. It may have slipped through — no problem if so.
If payment is already on its way, thank you and please ignore this note.
- Amount due
- $1,200.00
- Days overdue
- 3
Pay this invoice
Sent by Harbour Lane Design. Reply to this email with any questions.
Day fourteen.
Two weeks on, the wording firms up. It asks for settlement, and it offers a payment plan to anyone who needs one before you have to think of it.
Action needed: invoice from Harbour Lane Design is 14 days overdue
To acmecorp@example.com
Your invoice needs attention
Hi Acme Corp,
Our records show the invoice below is still unpaid and now significantly past due. We'd appreciate settlement as soon as possible.
If there is an issue with this invoice or you need to arrange a payment plan, please reply to this email so we can help.
- Amount due
- $1,200.00
- Days overdue
- 14
Pay this invoice
Sent by Harbour Lane Design. This is the second notice for this invoice.
Day thirty.
The last one states what happens next and gives seven days. It is the email you would put off writing, which is exactly why it is written already.
Final notice: overdue invoice from Harbour Lane Design
To acmecorp@example.com
Final notice: account status at risk
Hi Acme Corp,
This is a final notice regarding the overdue invoice below, now 30 days past due. Despite previous reminders it remains unpaid.
Please arrange payment within 7 days to keep this account in good standing. If payment is not received, the account may be referred for further collection action.
If you believe this notice is in error, contact us immediately by replying to this email.
- Amount due
- $1,200.00
- Days overdue
- 30
Pay this invoice
Sent by Harbour Lane Design. This is the final automated notice for this invoice.
Paid.
Every reminder carries a payment button. Your client taps it, pays by card, and never makes an account. The invoice closes itself and the chasing stops.
Card details go straight to Stripe and never touch InvoiceShark.
Harbour Lane Design
Invoice INV-1042 · Acme Corp
Paid in full
$1,200.00
Marked paid automatically
This bill is from 1829.
An invoice has looked like this for two hundred years. The only part anyone ever wanted to change is the chasing.
R. J. & S. Garrard, silversmiths on Panton Street, billed a customer five pounds four and six for a mustard pot and a ladle — the dots carrying the eye across to the figure, exactly as they do above.
One screen, all of it.
What you are owed, what has gone past its date, and what has already landed. Add an invoice and InvoiceShark watches the due date for you; you only open this to watch the paid column fill in.
$3,600
outstanding across 2 unpaid invoices, $1,200 of it overdue.
| Client | Amount | Due | Status |
|---|---|---|---|
| Acme Corp | $1,200.00 | 15 Sep | Overdue |
| Northwind Ltd | $2,400.00 | 28 Sep | Pending |
| Vellum Press | $850.00 | 2 Oct | Paid |
Free until it pays for itself.
$0
Free, with no card and no trial clock. Up to 2 active invoices and 3 reminder emails a month, sent when you press the button.
Payment pages and the dashboard are included, not held back.
Start free$23.99
Pro, a month. Unlimited invoices, unlimited reminders, and the three-fourteen-thirty ladder running on its own from the moment an invoice goes past its date.
Recover one overdue invoice and it has paid for itself many times over.
Upgrade to ProLet it do the asking.
Add what you are owed, and the follow-up runs itself from there. It takes about a minute to set up the first one.
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