Can an invoice change after it is sent?

No. A draft is editable; sending finalizes it, which is what makes the link, the PDF and the email all describe the same bill.

Who sees the invoice?

Whoever holds the link, plus the customer signed into your portal. The portal fetches the document with their session rather than from a public URL, so it does not outlive their access.

What happens when it is paid late?

Reminders stop the moment the payment confirms, and the invoice is marked paid against the transaction that settled it rather than against the email that chased it.

Do subscriptions create invoices too?

Yes. Every billing period opens a real invoice with its own document, so a subscription produces a paper trail rather than a series of unexplained charges.

Invoices

Invoices, paid in stablecoins

Start building

A full invoice with line items and a PDF, a link that does not expire, reminders that stop when it is paid, and reconciliation against the chain.

Line items and PDFs
Automatic reminders
Links that never expire

pay.reclack.com/in_0182

INV-00182

Acme Labs · issued Oct 16 · due Nov 10

Open

Platform seats4 × 20.00: 80.00 USDC
Support retainerMonthly: 40.00 USDC
Tax identifier: GB123456789
Total due: 120.00USDC

Memo: October retainer and platform seats. Paying from any wallet on Base, Ethereum or Polygon.

Pay invoice

Reminders: 3 days before, then weekly

INV-00182.pdf

Download

Acme Labs

to [email protected]

Invoice from Acme Labs

INV-00182 for 120.00 USDC is due on Nov 10. The pay link does not expire.

INV-00182.pdfBranded with your logo and colours

Invoice sent

INV-00182 emailed with its PDF, due Nov 10.

Invoices

Draft to paid, without chasing

Draft a bill with line items, a memo and a due date. Reclack sends it, chases it if you ask, and reconciles the payment when it lands.

Line items, a memo, a tax identifier and a due date. Editable until you send it.

Acme Labs

[email protected]

Draft

INV-00182

Issued Oct 16 · due Nov 10

120.00USDC

Platform seats (4): 80.00 USDC
Support retainer: 40.00 USDC
Total due: 120.00 USDC

Send invoice

Nothing has been sent. Edit freely.

invoice.createddelivered

A real bill: Line items
Every invoice: A PDF
The pay link: No expiry
Reminders: Chased

The document

Built the way a bill is built

Acme Labs

[email protected]

INV-00182

Issued Oct 16 · Due Nov 10

Platform seats4 × 20.00: 80.00 USDC
Support retainerMonthly: 40.00 USDC
Overage0 requests: 0.00 USDC

Total due

120.00USDC

Memo: October retainer and platform seats. VAT ID GB123456789.

Paid

What you get

A bill, not a payment request

Real documents

Reclack renders the PDF itself, laid out the same as the preview you drafted against.

One stable link

The email, the PDF and every reminder point at the same page, from the moment you send.

Line items

Quantities and unit amounts, with a memo and a footer in your own words.

Automatic reminders

Overdue invoices are chased for you, on a quiet period measured in days.

Pay from any wallet

The customer settles from the chain their funds are already on.

Customer copies

Every invoice is downloadable from the customer portal, long after it was paid.

Your application

Every state change, as it happens

Invoicing is a sequence, and your systems should hear about each step rather than poll for it.

webhooks · acme.dev/reclackstreaming

$ reclack logs tail --events --format=json

22:07:41.102 POST invoice.created 201 142ms INV-00182 · draft
22:07:41.884 POST invoice.sent 200 96ms Emailed with PDF
22:07:44.310 POST invoice.reminder 200 118ms Three days before due
22:07:44.907 POST payment.confirmed 500 2004ms 0x9491…a8d5 on Base
22:07:46.915 POST invoice.paid 200 134ms 120.00 USDC · receipt emailed

Reclack-Signature: t=1792447200,v1=5d41402abc4b2a76b9719d911017c592

Signed and retried

Each delivery carries a signature and a timestamp, with up to six attempts if your endpoint is down.

Attached to a customer

Every invoice belongs to a customer record, so a bill is never an orphan transfer on a chain.

Or read it back

Invoices carry their status, their document and the payment that settled them.

Questions

Before you bill

Can an invoice change after it is sent?: No. A draft is editable; sending finalizes it, which is what makes the link, the PDF and the email all describe the same bill.
Who sees the invoice?: Whoever holds the link, plus the customer signed into your portal. The portal fetches the document with their session rather than from a public URL, so it does not outlive their access.
What happens when it is paid late?: Reminders stop the moment the payment confirms, and the invoice is marked paid against the transaction that settled it rather than against the email that chased it.
Do subscriptions create invoices too?: Yes. Every billing period opens a real invoice with its own document, so a subscription produces a paper trail rather than a series of unexplained charges.

Bill your customers properly

Line items, PDFs and reminders, settled in USDC to your own address.

Start building