Free AI email writer

The tool writes from your brief and does not add facts of its own. If you leave something out, it uses a [placeholder] rather than guessing, so a thin brief gives you a generic draft with gaps, and a good brief gives you something close to final.

A strong brief covers four things:

• The point - what you are asking, announcing or answering, in one sentence.
• The context - the one or two facts the reader needs to understand it.
• The specifics - dates, amounts, names, attachments.
• The next step - what you want them to do, and by when.

Weak: "Email my landlord about the heating." Better: "Tell my landlord the heating has been out since Monday 3rd, I reported it by phone on Tuesday, and I need an engineer visit by Friday."

• Professional fits most work and admin email: clear, courteous, no flourish.
• Friendly suits customers, new contacts and colleagues you get on with. It adds warmth while staying on topic.
• Firm is for when something needs to happen: a late payment, a missed deadline, a repeated problem. It states the request plainly and the consequence of inaction only if you gave one.
• Apologetic acknowledges a mistake and says what you will do about it. It will not invent a cause, so tell it what went wrong.

Already have a draft that just sounds off? Paste it into the tone changer instead.

It is good at the routine emails that take longer than they should: follow-ups, extension requests, scheduling, complaints, thank-yous, introductions, status updates.

Some emails deserve more care than a first-pass draft:

• Negotiation. For a salary or offer counter, use the structure in 6 counter offer emails that add $10K or more to a job offer, and the counter offer letter generator.
• Leaving a job. The resignation letter generator is built for it.
• Formal disputes, legal or financial matters. The draft is general writing help, not legal or financial advice. Read it carefully and take advice where a lot depends on the wording.

For email you write every day, the Copilotly extension works on the text where it sits. Select a draft in Gmail, Outlook on the web or any text box, choose a tone and length, see a word-by-word comparison, then replace the text or insert below it.

The sidebar chat, opened with Alt+C, can read the page you are on, which is useful for replying to an email thread you have open. Memory and custom instructions let it remember how you sign off and how formal you like to be. Choose the model you prefer, including Claude or GPT.

Free runs are limited per day, and each field is capped at 6,000 characters, with a total limit of 12,000 across all fields. The recipient field takes up to 300 characters. No account is needed, and the text you enter is sent to an AI model to write the draft. Do not paste passwords, card numbers or anything you would not put in an email.

For more runs and every model, the free Copilotly plan and Pro raise the limits.

How long should a professional email be?

As short as it can be while still giving the reader what they need to act. Lead with the point, then the context, then the ask. The federal plain language guidelines recommend short sentences and putting the most important information first, and that applies to email as much as to forms.

What makes a good subject line?

One that tells the reader what the email is and whether it needs action: "Heating out since Monday 3rd - engineer visit needed by Friday" beats "Heating". The tool writes one for every draft, and you can shorten it.

Should I use AI for sensitive emails?

Use it to organize your thinking and draft, then rewrite the parts that carry weight in your own words. For resignations, negotiations and anything legal or financial, read the draft slowly and take advice where a lot depends on it. The Purdue OWL email etiquette guide is a good checklist for the basics.

Email type	Put in the brief	Tone
Request	What you need, why, the date you need it by	Professional
Follow-up	What it follows, the date, the question you want answered	Friendly
Complaint	What happened, when, what you already did, the fix you want	Firm
Apology	What went wrong, what you are doing, when	Apologetic

A request

Say what you need, the reason, and the deadline. Give the reader an easy way to say yes.

A follow-up

Mention the earlier conversation by date and topic, and ask one clear question.

A complaint

Stick to facts and dates, say what you have already tried, and state the outcome you want. Firm is not rude: it is specific.

An apology

Own the mistake, say what you are doing about it and when. Do not explain more than the reader needs.

Cut the first sentence

Drafts often open with a warm-up line. If the email still works without it, delete it and start with the point.

Check every date, amount and name

Placeholders are easy to spot. A wrong detail you typed in the brief is not, so read the draft against your own notes before you send.

Make one ask per email

If the draft asks three things, split it, or number them. Readers answer the first question and forget the rest.

Read it as the recipient

Would you know what to do after the first paragraph? If not, move the ask up. When the tone is not right, try the tone changer or use Friendly instead of Professional.