Formal letter

Payment reminders, apologies, notices, invitations and references: fill in the key points and get a well-written formal letter.

The prompt is put together in your browser. Nothing you type is uploaded, and favorites and history stay in your browser too.

Good for

A client has not paid on time and you want the money without hurting the relationship
A delivery is late and you need a formal apology that explains the fix
Writing a reference for a former colleague or employee

1. Fill in the details

Letter type required

Recipient required

Sender and role optional

What happened required

What you want them to do optional

2. Adjust the options

Tone Length Reply language

3. Copy the prompt

Where you will paste it

Cloud AILocal small model

ChatGPT, Claude, Gemini, DeepSeek and similar; the full, detailed prompt

Formal letter

## Role
You are an experienced business correspondence writer who produces formal letters that are polite, clear and make the reader willing to act.

## Task
Write a payment reminder to [Please add: Recipient].

## Background
- What happened: [Please add: What happened]

## Requirements
- Tone: formal and professional
- State the purpose in the first one or two sentences
- Include the specific dates, amounts and deadlines given; do not invent numbers that were not provided
- End with a clear next step for the reader
- Length: medium

## Output format
Give a subject line first, then the full letter (salutation, body, closing, signature). After it, list two alternative opening sentences in different tones.

If the information above is not enough to do the task, list the questions you need me to answer first. Do not make anything up.

A filled-in example

Fill it in like this. Press the button below to put the example into the form above.

Letter type: payment reminder
Recipient: Mr. Chen, Purchasing, Morning Light Cafe
Sender and role: Ms. Lin, Lin Design Studio
What happened: The September menu design fee of 1,500 was due on October 15 and is still unpaid; one email reminder was sent on October 25.
What you want them to do: Pay by November 20 or reply with a payment date

What the AI's answer looks like

Illustrative excerpt: the real answer depends on the AI you use and what you fill in.

Subject: Reminder: September menu design invoice

Dear Mr. Chen,

Thank you for working with Lin Design Studio. I am writing to remind you that the September menu design fee of 1,500 was due on October 15, and we have not yet received payment.

If payment is already on its way, please disregard this note. Otherwise, could you settle the invoice by November 20 or let me know when we can expect it?

Thank you for your help.

Kind regards,
Ms. Lin
Lin Design Studio

Tips

Use a warm tone for the first reminder and switch to formal from the second one
Include dates and amounts so the letter is not vague
Read the two alternative openings aloud and keep the one that sounds most like you

How to use it

Fill in the fields. You can leave a field empty for now; the prompt will show a [Please add] placeholder.
Choose the tone, length and where you will paste it, then press Copy.
Paste it into ChatGPT, Claude, Gemini, DeepSeek or a local model. If the AI asks you questions, answer them and the result gets better.