Free AI Email Rewriter

How the email rewriter works

1. Paste your draft into the box above. It can be a rough first attempt, a stiff corporate template you inherited, or an email you wrote in your second language and aren't sure about.
2. Pick a tone — Formal, Casual, Friendly, Direct or Apologetic. The same draft becomes a noticeably different email depending on the tone you choose.
3. Hit "Rewrite my email" and you get a polished version of the same email in seconds. Copy it into Gmail (or anywhere else) and send.

The tool is fully free. No sign-up, no email address, no credit card. One rewrite per day is on the house — for unlimited rewrites built directly into Gmail, install the Saymail Chrome extension.

When you'd use an email rewriter

• You drafted something and it sounds off. Stiff, too long, too apologetic, too casual. The rewriter gives you the same email in a tone that actually fits.
• You wrote in English as a second language and want it to sound natural. The rewriter doesn't just check grammar — it makes the phrasing native-sounding without translating away your intent.
• You're switching audiences. A casual note to a teammate that now needs to go to a client. Same message, more formal tone, one click.
• You inherited a corporate template full of filler and want something that reads like a human wrote it.
• You wrote something heated and need to take the edge off before you send it.

Before & after examples

To make the difference concrete, here's the same rough draft rewritten by the tool into three different tones.

Original draft:

Same email, four different impressions. Choosing the right tone is usually what makes the difference between an email that lands and one that doesn't.

What this tool actually changes

The rewriter does these things to your draft:

• Polishes wording — clearer phrasing, better word choice, smoother sentence flow.
• Applies the chosen tone — adjusts greeting, sign-off, vocabulary and rhythm to match Formal / Casual / Friendly / Direct / Apologetic.
• Fixes grammar and typos as a side effect.
• Cuts filler like "I hope this email finds you well" unless the tone really calls for it.
• Preserves your structure — if you wrote a greeting and a sign-off, they stay; if you didn't, the tool doesn't invent them.

What it doesn't do:

• It doesn't change the facts. Names, dates, numbers, asks, attachments mentioned in your draft are kept exactly as you wrote them.
• It doesn't invent context. If the draft doesn't say why a meeting moved, the rewrite won't add a reason.
• It doesn't translate. It writes in the same language as your input.

Why one rewrite per day?

The honest reason: this tool is a free demo of what Saymail does. We pay for every AI call behind it, so giving away unlimited rewrites doesn't make sense. One free rewrite per day per visitor is plenty to feel whether the output works for you.

If it does — and you'd rather not switch tabs every time you want to polish an email — Saymail is a Chrome extension that puts the same engine right into your Gmail compose window. No daily limit, voice dictation, five tones, four languages plus auto-detect. The free Saymail plan gives you 10 emails a month with every feature included; the Pro plan ($6 a month billed yearly) removes the monthly cap.

Email rewriter vs ChatGPT

You can absolutely rewrite emails by pasting them into ChatGPT. We've written a full guide on how to use ChatGPT for email writing. The reason a dedicated tool like this exists is friction: a single click and a tone choice is faster than opening a new tab, writing a prompt, copying the result and pasting it back.

ChatGPT is still the better choice when you want to iterate, ask follow-up questions, or work on something longer than an email. For "polish this and give it back to me", the dedicated tool wins on speed.

Frequently asked questions

Is this email rewriter really free?

Yes. No sign-up, no credit card, no email address required. The only limit is one rewrite per IP per day — that keeps the AI bill manageable. For unlimited rewrites we offer Saymail, our Chrome extension for Gmail.

How does the AI rewrite my email?

The tool sends your draft and your chosen tone to a large language model with strict instructions: preserve all facts, names and asks; improve clarity and apply the tone; output only the polished email. The result usually comes back in under five seconds.

Is it safe to paste a confidential email here?

Treat it the way you'd treat any AI tool. Your draft is sent to our AI provider to produce the rewrite and is not stored by Saymail. Don't paste content that your company's data-handling rules forbid you from sending to third-party AI services. Read our privacy policy for full details.

Why won't the rewriter let me try again?

The free version is capped at one rewrite per IP per day to keep AI costs sustainable. The limit resets at midnight UTC. If you want unlimited rewrites, install Saymail.

Will the rewrite sound like a robot wrote it?

Not if you pick the right tone. The most common reason AI-rewritten emails sound robotic is the wrong tone — defaulting to "professional" usually produces stiff, corporate output. Casual or Friendly give noticeably more human results for everyday email.

Can I rewrite an email in German, French or Spanish?

Yes. The tool writes the rewrite in the same language as your input. Paste a German draft, get a polished German version. Saymail (the extension) also adds explicit language selection if you want to dictate in one language and get the rewrite in another.

What's the difference between this and a grammar checker?

A grammar checker (like Grammarly) finds errors and suggests corrections. The rewriter takes your whole email and gives you a new version optimized for tone, flow and clarity in one shot. They're complementary; many people use both.

Can I use this for cold emails or sales outreach?

Yes, with one caveat: the rewriter polishes what you wrote, but doesn't optimize for persuasion or open rates. If you're writing high-volume sales sequences, dedicated cold-email tools like Lavender are designed for that specific use case.

How long can my email draft be?

Up to about 4,000 characters — roughly a long email. Beyond that the tool will ask you to shorten it.

What's Saymail, exactly?

Saymail is a Chrome extension that does what this tool does, but right inside the Gmail compose window — plus you can dictate the email with your voice instead of typing. It's free for 10 emails a month with every feature included; Pro is $6 a month billed yearly for unlimited use. Install Saymail here.