Letter Moth

How to Make AI-Written Messages Sound Human (Editing Guide)

· 4 min read · By the Letter Moth team

To make AI-written messages sound human, treat the draft as a rough first pass: cut the filler, add one specific detail only you would know, shorten the sentences and read it aloud. If you would not say it to the person face to face, change it.

AI drafts tend to share telltale habits: stacked compliments, vague enthusiasm, long openers and tidy three-part lists. Readers notice, and generic messages get ignored whether a person or a tool wrote them.

This guide gives you a quick edit routine, a list of phrases to cut, a before-and-after example, and some habits that keep your voice consistent. It applies to emails, LinkedIn notes and application answers.

Why do AI-written messages sound robotic?

Drafts are built from common patterns, so they drift towards the average: polite, smooth and slightly generic. They also tend to over-explain and to flatter, because that is common in the text they learned from.

The fix is not to avoid drafting tools. It is to bring in the things a draft cannot know: your actual relationship, your real reason, and how you naturally speak.

What phrases should I cut from a draft?

Scan for these patterns and replace or delete them.

  • Openers like "I hope this message finds you well" or "I came across your profile and was impressed".
  • Vague praise: "incredible journey", "truly inspiring", "passionate about".
  • Filler transitions: "furthermore", "in today's fast-paced world".
  • Closers like "I would love the opportunity to connect and explore synergies".
  • Lists of three adjectives or three benefits in every sentence.

How do I add personal detail that sounds real?

Add one specific fact: a post you read, a project they shipped, how you know them. Specific beats flattering every time.

Write it in your own words, with the quirks you naturally have. If you would say "this stuck with me" instead of "I found this to be highly insightful", use your phrase.

Avoid inventing details. Only mention what you have really read or seen, and check names, titles and companies before sending.

What does a before-and-after edit look like?

A typical robotic draft:

"Dear Priya, I hope this message finds you well. I came across your incredible profile and was truly inspired by your journey in product operations. I would love the opportunity to connect and explore potential synergies."

After a human edit:

"Hi Priya, your post about turning support tickets into product ideas was useful. I work in support at a SaaS startup and want to follow your work. Happy to connect."

The second version is shorter, names a real thing, and says who the sender is. Notice what changed: the greeting is simpler, the praise is replaced by a fact, and the closing ask is smaller.

How do I match my own voice and tone?

Keep a few lines of your own writing handy, such as an email you wrote that you liked. Compare the draft to it: sentence length, formality, whether you use contractions.

Pick the tone for the reader, not for yourself: a casual tone for a startup founder, a professional one for a formal industry, a concise one for a very busy person. When you are unsure, go warm but plain.

Watch out for the opposite problem too: over-editing until the message is so casual it feels careless. A friendly, plain tone still needs correct names, a clear reason and a small ask.

Read the message aloud. Anything that makes you stumble or sounds like a brochure should be reworded. For examples of notes that fit a short limit, see the connection note guide.

What is a quick checklist before I send an AI-assisted message?

Run through this list in under a minute.

  • Is every fact true and spelled correctly (name, company, role)?
  • Is there one detail only you would know?
  • Is it short enough to read in ten seconds?
  • Is the ask small and clear?
  • Would you be comfortable if the recipient knew a tool helped draft it?
  • Does it contain any confidential information you should not share?

Can a tool help me keep drafts in my voice?

Some can. Letter Moth asks you to write a short profile once (your name, role and what you do), then uses it in every draft, with five tones to pick from: natural, professional, casual, warm and concise. It drafts from the page you have open and inserts the text into the box, and never sends anything, so you still do the human edit above. For a related discussion of what is sent where, read is it safe to use AI for LinkedIn messages.

If you want a faster way through these steps, you can try Letter Moth. The editing routine above still applies: a tool saves time on the first draft, and your judgment makes it sound like you.

Try Letter Moth free

Drafts a LinkedIn note, cold email or application answer from the page you are on. You edit it and press send. 10 drafts a day are free, no card needed.

Add to Chrome, it's freeSee the install steps

Frequently asked questions

Can people tell when a message is AI-written?

Sometimes, mostly because of generic phrasing and stacked compliments. A specific, plainly worded message is hard to distinguish from one you wrote yourself.

Should I tell people I used AI to draft a message?

There is no universal rule. What matters is that the message is accurate, honest and your own after editing. Some workplaces and platforms have their own policies, so check them.

What is the fastest way to humanize a draft?

Cut the first sentence, delete vague praise, add one specific detail, and shorten the ask.

Does changing the tone help?

Yes, matching the tone to the reader helps. Warm, casual, professional and concise each suit different situations.

Is it okay to send an AI draft without editing?

Not advisable. Always read for accuracy and tone, since a draft can contain errors or phrasing you would not use.

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