Write a client email with ChatGPT, step by step
How to brief ChatGPT for a client email or a short brief, keep the facts yours, and send something a client can act on.
A client email fails in two opposite ways. It is so careful that nobody knows what you want. Or it is so smooth that it promises a date, a fee, or a result you never agreed. ChatGPT is good at the smooth part. You still own the careful part. This is a step by step way to get a draft you can send, using the free version, without handing the relationship to a chatbot.
I am using email as the example because that is what most working weeks actually contain. The same steps work for a one-page client brief. The brief is just an email that grew a heading or two.
Step 1. Decide the one thing the email must do
Before you open ChatGPT, finish this sentence: after they read it, they will ____. Reply with a date. Approve a scope. Send the missing logo. Confirm a budget. If you cannot finish the sentence, you are not ready to prompt. You are ready to think.
One email, one ask. If you also need to introduce a new person and change the fee and share a file, that is three emails or one email with a very clear order. Put the ask in the first three lines. Clients read on a phone between meetings. The third paragraph is where requests go to die.
Step 2. Collect the facts you are allowed to say
Write them as bullets in your notes app. What you already did. What you need from them. Any date that is real. Any price that is already agreed. What you will not mention yet. This list is the only source the tool may use. If a fact is not on the list, it does not go in the mail.
- The person’s name and how you address them.
- The project name you both use, not your internal nickname.
- The ask, in one line.
- Dates and amounts only if they are already agreed.
- The attachment or link, if there is one.
Step 3. Prompt for a short mail, with rules
Tell it the role, the task, the context, and the format. Then add bans. The bans matter more than the adjectives. “Warm and professional” is how every draft starts to sound the same. “Do not invent a delivery date” is how you stay employable.
Asha and Northwind are an example I wrote so you can see the shape. Use your names. If the first draft is longer than the limit, reply: “Cut it to the ask, the deadline, and the fee line. Nothing else.” Do not argue with the tone for ten minutes. Length and facts first.
Step 4. Read it as the client, not as the writer
Read only the subject and the first two sentences. Can you tell what you want? If the subject is “Quick update” you have wasted the inbox. A subject should carry the ask: “Homepage draft, need your notes by Friday.”
Then hunt for promises. Words like ensure, guarantee, seamless, excited to, and as discussed are where tools hide a commitment. “As discussed” is dangerous when the discussion was fuzzy. If you did not discuss it, say what you did discuss, in plain words.
Check the fee line twice. A model will happily write “as per our agreed investment” when you never used the word investment. Use the word you used on the call. If the fee is not confirmed, the email should ask, not announce.
Step 5. Fix the draft in your own voice
Swap one sentence so it sounds like you. If you never write “I hope this note finds you well,” delete it. If you always sign with your first name, do that. The tool can assemble the facts. The last line should be yours, because that is the line they will remember.
A simple close works: what you need, by when, and how to send it. “Reply on this thread with notes by Friday, even if they are rough.” That is kinder than a perfect paragraph, and it is easier to answer.
That example is short on purpose. It has the ask, the deadline, the fee boundary, and the thing you are not promising. You can add a file link. You should not add a story about how hard the week was.
When the job is a brief, not a mail
A client brief is the same facts with headings. Ask for four headings only: what we are making, who it is for, what is in and out, and what happens next. Give the tool your bullets. Tell it not to add goals you did not write. A brief that invents “increase brand love” is how projects start confused.
- What we are making, in one sentence.
- Who it is for, in their words.
- What is in, and what is out.
- The next action, with a person and a day.
What not to do with a client’s mail
Do not paste a whole thread that includes other clients, salaries, or a contract you have not signed. Do not ask the tool to “sound more expensive.” Price is a decision, not a tone. Do not ask it to write a legal threat. If the relationship is stuck, write less, not more, and talk to a person.
A prompt you can keep
Save this skeleton and fill the blanks each time. Role: you are drafting a client email for me. Task: one ask, under 140 words, subject line included. Context: paste only the facts. Format: subject, greeting, ask, boundary, next step, my first name. Rules: do not invent dates, fees, or praise.
If you want to practise this live, with your own half-written mail and someone checking the draft beside you, that is the AI Kickstart Live. You can also do the five steps above on the next real email in your inbox. One mail, checked, sent. That is the whole skill.