Reminders & follow-up

Invoice automatically reminds your customers by email on a fixed schedule — there is no per-invoice or per-team configurable reminder policy today.

Reminder schedule

This schedule is not configurable via the API or a per-invoice reminders object — it applies uniformly to every sent, unpaid invoice.

Track unpaid invoices

curl "https://api.wajub.com/invoices?status=overdue&date_from=2026-01-01" \
-H "Authorization: sk.xxxx"

Track status changes

There is no dedicated invoice.payment_failed event — watch invoice.updated and check data.status for a transition to overdue.

{
  "id": "evt_Inv009",
  "type": "invoice.updated",
  "data": {
    "id": "inv_01JXXXXXXXXXXXXX",
    "status": "overdue"
  }
}