Demand letter for unpaid invoice: AI prompt for legal
A ready-to-run prompt for email drafting work in legal practice. It assigns the AI a specific senior role, takes your details as variables, and defines the output format — so the first result is usable, not a warm-up.
What this prompt does
Draft a firm but professional demand letter from [company] to [debtor] for an unpaid invoice of [amount], due on [date]. It structures the request the way experienced practitioners brief a colleague: context first, then explicit deliverables, then quality constraints.
Best for
Legal professionals — and anyone doing this work — who need email drafting handled to a professional standard for clients and opposing counsel. Typical moments: contract negotiations, client advisories and matter updates.
Before you use it
Have these details ready to replace the highlighted variables:
[company][debtor][amount][date]
The prompt
Draft a firm but professional demand letter from [company] to [debtor] for an unpaid invoice of [amount], due on [date]. Reference the underlying agreement dated [date], state the amount with any contractual late fees, set a 14-day payment deadline, and note next steps if unpaid (collections/legal action) without being threatening. Formal tone, one page.
Quality checklist before you run it
- Fill the [variables] with specific, true details
- Read the draft aloud once — cut anything you wouldn't say
- Check names, dates and numbers before sending
Common mistakes
- Sending the template without personalizing the [variables] — recipients spot boilerplate instantly
- Burying the ask in the last paragraph
- Vague subject lines like “Quick question”
When to use it — and when not to rely on it
Use it whenever email drafting would otherwise start from a blank page. Don't rely on it as a finished product: outputs need your judgment, your facts, and — in regulated work — professional review.
Related prompts
- Cold outreach sequence — Sales
- Mutual NDA draft — Legal
- Contract risk summary — Legal
- Plain-English clause rewrite — Legal
- Candidate outreach message — Recruiting
Logical next step
After this, most legal teams move on to Mutual NDA draft.
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