Find one line only you could have written. A number you know. A client you remember. A call you would make differently. If nothing passes, it is not yours yet, and there are 3 ways to fix that.
A man ran 3 pieces of text through an AI detector. The one he wrote himself came back 100% human. The one he copied straight out of Claude came back 50%. The third was a transcript of him talking in a meeting. His own voice, typed up. The detector called it 100% AI.
So the number is not information. Your reader is asking something the detector cannot measure: is there anything of you in this? Millions of people have the same tool you do. If there is nothing of you in what you send, you handed away the only thing you had that was scarce.
This check takes 10 seconds and costs nothing. And when it fails, there are 3 ways back in.
Before anything goes out under your name, read it once looking for one specific thing. Not a good sentence. A sentence nobody else with the same tool could have produced.
That is the whole test. Nothing passes? It is not yours yet. Pick one of the 3 prompts below and it will be in 5 minutes.
Each one is a prompt. Paste your draft, answer the question it asks you, and it rewrites only the part that needed you.
It asks you for the real numbers it could not have known, then puts them where they matter most.
Here is a draft: [paste it].
Ask me 3 questions about real numbers from my own business that would make this specific. Prices, dates, how many, how long, what it cost.
Wait for my answers. Then put them in where they carry the most weight. Change nothing else.
You tell it one real moment in your own words. It lets that moment carry the point and leaves your words alone.
Here is a draft: [paste it]. I am going to tell you about one real moment with a client, in my own words: [2 or 3 sentences, e.g. she called on a Sunday, the gallery link had expired, and I re-sent it from the car]. Rewrite one paragraph so that moment carries the point. Keep my words for the moment exactly as I said them. Do not polish them.
It finds the safest sentence, the one where you agree with everyone, and asks what you would say to someone who pushed back.
Here is a draft: [paste it].
Where in this am I agreeing with everyone? Point at the safest sentence, the one any expert would sign.
Then ask me what I would say to a client who disagreed with it. Wait for my answer, and rewrite that one sentence with my answer in it.
Once a week, do this to something you already sent. It is uncomfortable the first time and useful every time after.
Read this: [paste something you sent this week].
Tell me which sentences any AI would have written for anyone with the same prompt, and which one sentence only I could have written.
If there is not one, say so plainly. Do not be kind about it.
When it says "there is not one," you have your answer, and you have the 3 prompts above.