Overdue invoice follow-ups from your books: AI agent prompt

Worked example

A fictional business, so you can see what to paste in and what a good answer looks like. The example answer was written with AI help and its numbers and dates were checked; your AI's answer will be worded differently, so check it the same way.

Sample input (what you paste in)

Today is Oct 24, 2026.
- Lakeview Yoga, INV-1042, $480, due Oct 14, no reminders
- Cobalt Signs, INV-1031, $1,250, due Sep 30, 1 reminder
- Pine St Deli, INV-1009, $2,100, due Aug 29, 2 reminders

Example output (illustrative)

1) Lakeview Yoga, INV-1042, 10 days late (friendly)
Subject: Quick reminder: invoice INV-1042
Hi! Just a friendly nudge that invoice INV-1042 for $480 was due on October 14. You can pay here: [payment link]. If it's already on its way, thank you and please ignore this.

2) Cobalt Signs, INV-1031, 24 days late (firmer)
Subject: Invoice INV-1031 now 24 days overdue
Hello, invoice INV-1031 for $1,250 was due on September 30 and is now 24 days overdue. Please pay by October 31 using [payment link], or let me know today if there's an issue with the invoice.

3) Pine St Deli, INV-1009, 56 days late (final notice)
Subject: Final notice: invoice INV-1009
Hello, despite two earlier reminders, invoice INV-1009 for $2,100 (due August 29) remains unpaid. Please pay in full by November 7 via [payment link]. If we don't receive payment or hear from you by then, we'll pause further work and [your next step, e.g. late fees per our terms]. 

Drafts only; nothing has been sent.

Check before you use it: Check the days-late maths and only threaten steps your terms actually allow.