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How echo writes email replies that actually sound like you

the short answer

AI email usually sounds generic because it's generated by a model that has no idea how you write, so it defaults to a bland professional average; echo studies your own sent Gmail to learn your tone, common phrasings, typical length, and sign-offs, then drafts replies in that voice, so the result reads like something you'd actually send.

You can almost always tell when an email was written by AI. It's a notch too formal, weirdly enthusiastic, padded with phrases like 'I hope this finds you well', and missing the small habits that make your writing yours. Recipients notice too, which is exactly the opposite of what you want from a reply that goes out under your name.

The fix isn't a better generic model — it's a model that knows you. echo learns how you write from your own sent mail and drafts in that voice, so the assistant's output and your own writing are hard to tell apart. This page explains what 'your voice' is actually made of and how echo keeps drafts sounding like it.

your sent mailis echo's only source of truth for how you sound
open echo →about echo

Why generic AI email is so obvious

A general model writes to a safe average: complete sentences, even formality, a tidy structure. That average is nobody's actual voice, which is why the output feels slightly off even when it's grammatically perfect. The more email you send, the more the gap shows — your real replies are shorter here, blunter there, warmer in a way the average never captures.

Worse, fixing it by hand often takes as long as writing from scratch, because you're not editing a draft so much as translating a stranger's email into your own. That's the trap echo is built to avoid.

What 'your voice' is actually made of

Voice isn't one thing; it's a bundle of small, consistent choices. How formal you are, how long your replies run, the phrasings you reach for, whether you open with a greeting or dive in, and how you sign off. Individually they're tiny; together they're recognisably you.

echo learns those patterns from your sent mail and applies them to each draft, so a reply lands at roughly your length, your register, and your sign-off rather than a template's. It's aiming for 'that sounds like me', not 'that sounds professional'.

Keeping it yours over time

Your voice isn't frozen, and no first pass nails everyone. So echo includes a one-tap signal on each draft — good draft or needs work — that tells it when it's on target and when it's drifting.

That feedback sharpens the drafts as you go, so the more you use it the closer the default gets to how you'd have written it yourself. It's a quiet loop, not a settings page: you just rate and keep moving.

how it works

  1. 01

    Connect your Gmail

    Link one account so echo can read your sent mail — the record of how you actually write.

  2. 02

    echo builds your voice profile

    It learns your tone, phrasings, length, and sign-offs from your past replies.

  3. 03

    Get drafts in your voice

    For each email that needs a reply, echo writes one or two options shaped like your writing.

  4. 04

    Rate to refine

    Tap good draft or needs work, and echo tunes future drafts toward how you sound.

frequently asked

How does echo know how I write?
It learns from your own sent Gmail — your real replies are the source for your tone, phrasing, length, and sign-offs. It isn't guessing from a generic template.
Will the drafts really sound like me, or just 'professional'?
The goal is the former. Because echo models your actual writing rather than a polite average, drafts aim to match your register and habits, and the good/needs-work signal pulls them closer over time.
What if my style changes?
Rate drafts as you go and echo adapts. Since it keeps learning from how you write and respond, it tracks shifts in your voice rather than locking to a first impression.
Can I still edit a draft before sending?
Always. echo only drafts — every reply opens in an editor so you can adjust anything, and it sends through your Gmail only when you press send.

Last updated June 9, 2026

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