Best Free AI Tools for Writing & Email
Email is where office writing actually happens, and it splits into two jobs: getting a draft onto the page, and making sure what you send is clean. This list covers both — one free AI drafter, two grammar safety nets, a paraphraser for stubborn paragraphs, a sentence-level fixer, a multilingual checker and a readability editor. Every free entry is on a real free tier, with the tier's actual limits printed next to it — and every listing carries a badge: FREE for a genuinely free tool, FREEMIUM for a free tier with real limits, PAID when there is no free plan. Two respected paid names close the page as benchmarks, so you can judge the free tiers against what money buys.
How to choose in 30 seconds
- Blank-page problem? Start with ChatGPT's free tier: give it three bullet points and ask for a polite draft, then edit like a human.
- Typos in front of clients? Grammarly's free plan checks everything you type, in the apps you already type it in.
- One sentence that won't behave? Wordtune offers alternative wordings; QuillBot rewrites a whole short paragraph at a time.
- English isn't your first language? LanguageTool checks 30+ languages and catches the article and preposition slips that US readers notice first.
- One rule for all of them: re-read before you send. Our channel's guide to 5 checks before you send any AI-written email exists because a polished AI draft once hid a wrong total and a weekday that did not exist.
The list at a glance
| Tool | Badge | Free tier / price, in one line | The catch |
|---|
| ChatGPT | FREEMIUM | Free tier with GPT-5 access and a small rolling message allowance | Falls back to a lighter model when the allowance runs out |
| Grammarly | FREEMIUM | Grammar, spelling & tone detection everywhere you type; 100 AI prompts a month | Rewrites and plagiarism checks are Pro only |
| QuillBot | FREEMIUM | Paraphrase up to 125 words a pass; summariser up to 1,200 words | 125-word cap; plagiarism checker is Premium only |
| Wordtune | FREEMIUM | 10 rewrites a day; 3 AI summaries a month | 10 rewrites go fast; maker has wound down development |
| LanguageTool | FREEMIUM | Checks up to 2,000 characters a pass, 30+ languages, on the website | Browser extension is Premium-only; deep style checks are paid |
| Hemingway Editor | FREE | Free web editor: readability grade & style highlights, no account | Flags style only — it does not check grammar or spelling |
| Jasper | PAID | From $39/month billed annually; 7-day trial | Marketing-priced; trial asks for a card |
| Superhuman Mail | PAID | From $25/month billed annually; no free plan | Gmail & Outlook only; best AI features need Business |
The tools, checked one by one
Free status: a permanent free tier (not a trial) with access to the current GPT-5 family. OpenAI's help pages describe a small rolling allowance of flagship-model messages — roughly 10 per 5 hours — after which chats continue on a lighter model; uploads and image generation are limited separately.
For email, this is the drafter: paste three rough bullets, name the tone ("polite, firm, short"), and you get a complete email to edit instead of a blank compose window. It is equally good at the reverse job — "make this shorter without sounding rude."
Best for: first drafts and tone rewrites of everyday workplace email.
Honest limit: the flagship allowance runs out on a heavy day, and the fallback model is noticeably weaker. Also treat it like a public notebook: do not paste confidential company or client details into a personal account — your employer's policy decides what is allowed.
Free status: a permanent free plan: grammar, spelling and punctuation checking plus basic tone detection across the browser extension, desktop and mobile apps — and 100 generative-AI prompts a month.
Grammarly's advantage is placement: it sits inside Gmail, Outlook on the web, Google Docs and almost everywhere else you type, catching the mistake in the second before you send rather than in a separate editing step afterwards.
Best for: a always-on safety net for client-facing email.
Honest limit: free detects your tone but won't rewrite it — full-sentence rewrites, tone adjustment and the plagiarism/AI-text detectors are all Pro features.
Free status: a free plan with the paraphraser limited to 125 words per pass in two modes (Standard and Fluency), a summariser that accepts up to 1,200 words, plus a grammar checker.
QuillBot is the tool for a paragraph that says the right thing in the wrong words — a status update that sounds defensive, an explanation that goes in circles. Paste it in, get a cleaner version, keep the parts that still sound like you.
Best for: rewording one awkward paragraph at a time, and condensing long text.
Honest limit: 125 words per pass makes long documents a copy-paste chore, and the plagiarism checker is Premium-only. Rewriting someone else's text does not make it yours — use it on your own drafts.
Free status: the Basic plan is free: 10 rewrites and AI suggestions a day, 3 AI summaries a month, and unlimited spelling and grammar checks.
Where QuillBot rewrites paragraphs, Wordtune works a sentence at a time: highlight the line that sounds off and it offers several alternative wordings — shorter, warmer, more formal — and you pick. For the one awkward sentence in an otherwise fine email, it is the fastest fix on this page.
Best for: polishing individual sentences before you hit send.
Honest limit: ten rewrites a day disappears quickly in a writing-heavy job. One more honest note: reporting in 2026 says its maker, AI21 Labs, has discontinued active development of Wordtune — it still works and still sells plans, but treat it as a handy extra, not the tool you build your workflow on.
Free status: the Basic plan is free: grammar, spelling and punctuation checks on the website for text up to 2,000 characters per check, in more than 30 languages, plus 3 AI sentence rephrasings a day.
LanguageTool is the multilingual option. If you write to colleagues in English but think in another language — or your team writes in Spanish, German or French as well — it checks them all with one account, and it is open-source at its core, with servers in Germany.
Best for: non-native English writers and anyone writing in more than one language.
Honest limit: since 2026 the browser extension belongs to the paid plan, so free checking means pasting text into the website — and the 20,000+ deeper style and clarity checks are Premium-only.
Free status: the web editor at hemingwayapp.com is free to use with no account: full readability scoring and the complete colour-coded highlighting system.
Hemingway does one job and does it bluntly: it grades how hard your text is to read, then paints the problems — very hard sentences in red, hard ones in yellow, passive voice, adverbs and words with simpler alternatives. Run a dense, jargon-heavy email through it before a wide audience reads it.
Best for: a final readability pass on emails and documents many people will read.
Honest limit: it is a style highlighter, not a proofreader — the free web version does not check grammar or spelling, and the AI fix-it suggestions belong to the paid Plus tier. Its advice is deliberately strict; ignore any highlight that would change what you mean.
Two paid benchmarks — no free plan
Two names you will meet in every "best writing tool" roundup, listed here with their real entry prices so the free tiers above have an honest yardstick. Neither has a free plan; both are badged PAID.
Price: from $39/month billed annually (Creator plan; $49 month-to-month), per Jasper's pricing page. No free plan — a 7-day free trial, and it asks for a credit card up front.
Jasper is the marketing team's writing platform: templates for campaigns, ads and long-form posts, and a "brand voice" that keeps output sounding like your company instead of like a chatbot. For marketing departments producing copy at volume, that consistency is the product.
Best for: marketing teams that need on-brand copy at volume.
Honest limit: it is priced for marketing budgets, not for fixing office email — a solo office worker pays $39 a month for machinery they will mostly not use, and the trial converts to a paid plan if you forget to cancel.
Price: from $25/month billed annually (Starter; $30 month-to-month), per Superhuman's pricing page. No free plan, and its pricing page lists no free trial.
Superhuman is not a writing tool bolted onto email — it is a replacement email client for Gmail and Outlook accounts, built for speed: keyboard-first triage, a split inbox, and AI that summarises threads and drafts replies in your voice. People who live in their inbox all day are its natural audience.
Best for: executives and heavy email users on Gmail or Outlook who will actually use the speed features daily.
Honest limit: $25–30 a month for an email layer is the top of this category, it only works with Gmail and Outlook accounts, and the headline AI features — Auto Drafts and Ask AI — sit on the Business plan at $33/month billed annually, not on Starter.
Questions people ask about free writing tools
Which tool should I install first?
Grammarly's free plan, if you send a lot of email: it works inside the apps you already use, so it helps from the first message. Add ChatGPT's free tier for drafting, and you have covered both jobs on this page for $0.
Can my employer see what I paste into these tools?
Assume anything you paste into a personal account leaves your company's control. Many employers ban pasting customer data, contracts or unreleased numbers into public AI tools. When in doubt, use the tool your IT department approved, and draft with placeholders ("[CLIENT NAME]") instead of real details.
Is a paraphraser cheating?
On your own writing, no — it is editing, the same job a colleague does when they suggest a cleaner sentence. On someone else's writing, a paraphraser does not transfer authorship: submitting reworded text as your own original work is a problem in school and at work, whatever tool produced it.
Why do the free tiers all cap something different?
Each company fences the feature it believes you will pay to unlock: Grammarly fences rewrites, QuillBot fences length, Wordtune fences daily volume, LanguageTool fences the extension and depth. Knowing which fence you will hit first — that is the whole point of the limits printed on this page.
Why does a free-tools directory list paid tools at all?
As benchmarks — and because "no free plan" is useful information. Jasper and Superhuman appear in every writing-tool roundup; knowing they start at $39 and $25 a month respectively, with no free tier, tells you exactly what the free tools on this page are saving you. Paid listings are always badged PAID with the real entry price, and a trial is always called a trial.
Do I still need to proofread if the tool says the text is clean?
Yes. Checkers catch patterns, not facts: none of them knows the meeting is actually on Thursday, or that the total should be $900 and not $1,000. The five-checks routine linked above takes about a minute and exists precisely for the errors no grammar tool can see.
Checked November 2026. Every free tier above was verified against the tool's official pricing page, plans page or official help documentation. Free tiers change without much notice — confirm the current limits on the tool's own site before you rely on them, and tell us via the channel if you spot a change before we do.