Undetected.ai

Humanize AI text · Emails

AI humanizer for emails, outreach and client replies

Nothing kills a reply rate faster than an email that reads like it came out of a generator. Prospects have seen thousands of them. The giveaways are always the same: an opener about hoping this finds you well, three balanced clauses, and a closing that asks for fifteen minutes on the calendar.

Undetected.ai rewrites that draft into email a person would actually send. Your offer, names, numbers, and call to action stay exactly as written; the templated rhythm goes. Paste the draft, pick a tone, and copy something that sounds like it came from you rather than from a model.

The Humanizer

Try:
Tone
Strength:

2 free runs a day, up to 200 words each. We save your run so you can get back to it, and a delete button appears with the result. See privacy.

AI-pattern score

This is our own AI-pattern score, measured here on sentence rhythm, template phrases, vocabulary variety and passive voice. It is not a GPTZero, Turnitin, Originality.ai, Copyleaks or ZeroGPT result, and it does not predict one. Worth knowing: we also ask the rewrite to vary sentence length, drop template phrases and prefer the active voice, so some of the drop is built in. Read the two panels below, not just the number.

Before ·

After ·

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Meaning kept · Your own text rewritten · Saved to your history, delete any time

GPTZERO TURNITIN ORIGINALITY.AI COPYLEAKS ZEROGPT

Our own score before and after

Your text meaning intact

Why it works

What you get when you humanize an AI-written email

Kills the template tone

The stock openers, balanced triads, and corporate filler that mark generated outreach get replaced with the shorter, uneven phrasing real senders use.

Your offer stays exact

Pricing, dates, names, links, and the ask survive the rewrite untouched. Only the wrapper changes, so nothing in your pitch shifts by accident.

Written for a reply

Shorter sentences, a clear ask, and a voice that reads like one person writing to another. That is what gets answered, and it happens to be what detectors read as human.

What it handles

Natural prose, with the proof on screen

You paste the text and pick a tone. Undetected.ai rewrites the robotic patterns, keeps your meaning, and shows our AI-pattern score before and after.

  • Cold outreach that does not read templated
  • Client updates and follow-ups in your voice
  • Recruiting and candidate email
  • Keeps pricing, dates, names, and links exact
  • Tone control from formal to casual
  • Fast enough to run before every send
EMAILS Human

Before, flagged as AI

Moreover, it is important to note that this approach delivers a significant impact across the board.

Humanized

This approach actually moves the needle, and you feel the difference right away.

GPTZero Turnitin Originality.ai Copyleaks ZeroGPT

Why Undetected.ai

Readable output, and the measurement in view

Not word-salad that beats one scanner and reads worse. Natural prose that keeps your meaning, rebuilt sentence by sentence.

Our AI-pattern score, before and after

Four measured signals (sentence rhythm, template phrases, vocabulary variety and passive voice) scored on your draft and on the rewrite, with the reasons behind each number. It is our own measure, not a GPTZero, Turnitin, Originality.ai, Copyleaks or ZeroGPT reading, and we have no access to those services.

See the score change

The gauge animates from our AI-pattern score for your original to the score for the rewrite, with the reasons behind both numbers.

Keeps your meaning

Your facts, argument, and structure stay intact. Undetected.ai rewrites the robotic rhythm, not your point, so the output is publishable as is.

Good questions

Questions about emails

They can be run on any text, and some hiring and procurement teams do scan written submissions. The bigger practical risk is human: recipients recognize generated outreach instantly and delete it, which costs you the reply long before a detector matters.
No. The rewrite targets rhythm and phrasing, not substance. Numbers, dates, product names, links, and the specific ask come back exactly as you wrote them.
Yes. Run the template through once to fix the voice, then personalize per prospect. Pro covers 80,000 words a month and Scale covers 250,000 for teams sending sequences daily.
Uniform sentence length, a polite throat-clearing opener, three-item lists, and hedged phrasing that never commits. Real email is shorter, less balanced, and gets to the point in the first line.

Explore more

More ways to humanize AI text

Further reading: Do employers use AI detectors on cover letters?

Make this draft read like you wrote it

Paste your own text and watch our AI-pattern gauge move from the score on your draft to the score on the rewrite, meaning kept intact.

Meaning kept · Your own text rewritten · Saved to your history, delete any time

Humanize my text