How to Use AI to Write Emails That Don’t Sound Like a Robot

You can spot an AI-written email from a mile away. “I hope this email finds you well.” “I wanted to reach out regarding…” “Please do not hesitate to contact me.” Three paragraphs to say “Can we move the meeting to Thursday?”

I use ChatGPT and Gemini for emails almost every day – but I don’t send what they give me straight away. A few small habits make the difference between an email that sounds like a template and one that sounds like you. Let me show you.

Why AI Emails Sound So Robotic

AI tools learned from millions of emails, many of them very formal. So when you ask “write an email to my manager”, the AI picks the safest, most average version. Average formal email = stiff, long, and full of stock phrases.

It doesn’t know:
– How you normally write.
– How well you know the person.
– What tone your office uses.
– What exactly you want to happen after they read it.

Give it those details, and the result changes completely.

The Basic Prompt That Works

Here’s a structure I use:

Write an email to [who] about [what]. Our relationship: [e.g. my manager, we’re friendly but it’s work / a client I’ve never met / my college professor].
The main point: [what you need them to know or do].
Key details: [dates, numbers, context].
Tone: [warm and simple / polite but direct / casual].
Length: [under 100 words / 3–4 sentences].
Avoid: clichés like “I hope this email finds you well”, “reach out”, “do not hesitate”, and overly formal language.

That “Avoid” line alone improves things a lot.

Example 1: Asking Your Manager for Something

Lazy prompt:

Write an email to my manager asking to work from home.

Typical AI output (shortened): “Dear [Manager], I hope this email finds you well. I am writing to formally request permission to work remotely…” You get the idea.

Better prompt:

Write a short email to my manager Priya asking if I can work from home on Wednesday and Thursday this week. A plumber is coming for repairs and the timing isn’t fixed. I’ll be online the full day and can join all meetings. Tone: friendly but professional – we talk casually on Slack. Under 80 words. No clichés.

Result might look like:

Hi Priya,

Could I work from home this Wednesday and Thursday? We’ve got plumbing repairs at home and the plumber can’t give a fixed time. I’ll be online all day as usual and will join every meeting.

Let me know if that works.

Thanks,
Arjun

Short, clear, human.

Example 2: Following Up Without Sounding Pushy

Prompt:

Write a polite follow-up email to a client who hasn’t replied to my quotation for website design, sent 10 days ago. I don’t want to sound desperate. Mention I can adjust the scope if the budget is a concern. Keep it under 70 words.

The “don’t want to sound desperate” and “adjust the scope” bits help the AI strike the right tone.

Example 3: Writing to a Professor

Prompt:

Write an email to my professor, Dr. Rao, asking for a 3-day extension on my project submission due Friday. I had fever this week and have a doctor’s note. I’ve finished about 60% of the project. Respectful but not overly formal. Short.

Mentioning specifics – the doctor’s note, how much is done – makes the request sound genuine, because it is.

Example 4: Saying No Nicely

This is where AI is genuinely helpful, because saying no is hard.

Prompt:

Help me reply to a colleague who asked me to take on an extra report this week. I can’t – I’m already handling the quarterly review. I want to say no but stay helpful. Suggest someone else or a later date. Keep it warm and under 80 words.

Make It Sound Like You: Teach It Your Style

The best trick I know: give it examples of your real emails.

Here are 3 emails I’ve written recently: [paste]. Notice my tone, sentence length and how I sign off. From now on, write emails in this style.

In ChatGPT, you can also add your preferences in Settings → Personalization (Custom Instructions / memory), so you don’t have to repeat it every time. Something like: “When I ask for emails, keep them short, use simple English, avoid clichés, and sign off with ‘Thanks, Arjun’.”

Gemini has similar options for saving preferences, and if you use Gemini inside Gmail (Help me write), you can refine drafts right in your inbox.

Phrases I Delete From Almost Every AI Draft

Keep a mental (or real) list. These make emails sound robotic:

• “I hope this email finds you well.”
• “I wanted to reach out…”
• “Please do not hesitate to contact me.”
• “I am writing to inform you that…”
• “Kindly do the needful.” (This one’s an Indian classic, AI or not!)
• “Thank you for your time and consideration” – fine sometimes, but not on every email.
• Overuse of “Furthermore”, “Additionally”, “Moreover”.
• Long sign-offs like “Looking forward to hearing from you at your earliest convenience.”

Replace them with simple, direct sentences. “Just checking in on…” “Could you…” “Let me know.”

My Editing Routine Before Sending

AI gives me the first draft. Then I spend 30 seconds on this:

1. Read it out loud (or in my head). Does it sound like something I’d say?
2. Cut the first sentence if it’s just warming up. Get to the point.
3. Check every fact – names, dates, numbers, attachments mentioned. AI sometimes invents details or changes dates slightly.
4. Shorten it. Most AI drafts can lose 30% without losing meaning.
5. Check the tone for the person. An email to a senior client and a teammate shouldn’t sound the same.

Things to Be Careful About

• Confidential information. Don’t paste client contracts, salary data, internal financials or personal information into AI tools unless your company allows it. Many companies have rules about this – check yours.
• Sensitive emails. Condolences, apologies for serious mistakes, difficult HR conversations – AI can help you find words, but write these mostly yourself. People can feel when something isn’t sincere.
• Over-polishing. An email that’s too perfect can feel cold. A slightly casual line is often warmer.
• Wrong recipient or details. Always double-check names. AI sometimes swaps them around if you’ve given it several in one chat.

Quick Prompts You Can Save

• “Make this email shorter and more direct, keep it polite: [paste]”
• “Rewrite this to sound friendlier but still professional: [paste]”
• “Turn these bullet points into a short email to my team: [paste]”
• “I’m annoyed. Rewrite my reply so it’s calm and clear, not rude: [paste]”
• “Translate this email into simple Hindi/Telugu for my landlord: [paste]”

That fourth one has saved me from sending a few emails I’d have regretted.

FAQ

Is it okay to use AI to write work emails?
Generally yes for drafting, as long as you check facts, follow your company’s policies on confidential data, and edit it to sound like you.

How do I make AI emails sound less formal?
Tell it the relationship and tone, set a word limit, and ask it to avoid clichés. Giving it examples of your own emails helps most.

Can people tell if an email was written by AI?
Often, if it’s full of stock phrases and overly long. Edited, short and specific emails rarely feel AI-written.

Can Gemini write emails directly in Gmail?
Gmail has a “Help me write” feature powered by Gemini for some accounts. Availability depends on your account type and region.