Using AI to draft emails without sounding like a robot
To use AI to write emails, the simplest route is the assistant inside your mailbox: Help me write in Gmail and Copilot in Outlook draft new messages, rewrite yours, and change their tone. As of November 10, 2026, Gmail’s Help me write is available on a personal account without a paid plan only in the US; in the UK, Canada, and Australia, it needs a Google AI or Workspace plan.
Drafting emails with AI in Gmail and Outlook
An AI draft sounds like a robot when it has nothing of yours to work with: no facts, no history with the reader, no sense of how you write. This page is part of AI for emails and documents and covers the drafting tools in Gmail, Outlook, ChatGPT, and Claude as of November 10, 2026, starting with Google’s Help me write, which is the most widely available.
The fix is the same in every tool: give the assistant the facts and the tone, let it write the first draft, and edit the result yourself. Google, Microsoft, and OpenAI all ask you to review AI-written text before using it, and Google warns that Gemini’s suggestions can be inaccurate or inappropriate.
What’s built into your mailbox
| Tool | What it does | Who gets it, as of November 10, 2026 |
|---|---|---|
| Gmail, Help me write | Drafts a new email or rewrites yours: Formalize, Friendly, Shorten, or your own instruction | Personal accounts without a paid plan in the US only; Google AI plans and Workspace elsewhere; eight languages |
| Gmail, suggested replies | Short replies you can edit before sending | Personal accounts in the US, or an eligible plan; account set to English |
| Gmail, Proofread | Grammar, tone, and style suggestions on the web | Google AI Plus, Pro, or Ultra, or Workspace |
| Copilot in Outlook, Draft | Drafts from your prompt; change the length and tone, then keep or regenerate | Microsoft 365 Personal, Family, Premium, or Pro; work accounts, with features that depend on the license |
| Copilot in Outlook, Coaching | Reviews a draft you wrote for tone, clarity, and how the reader may take it | Same as Draft |
Two limits in Outlook: Draft with Copilot does not handle plain-text messages in the new Outlook and on the web, and Copilot’s features are not supported on signed or encrypted emails. With a Microsoft 365 Personal or Family plan, Microsoft’s page on Copilot for personal accounts says it also works for Gmail, Yahoo, and iCloud accounts added to Outlook on the same device, except in classic Outlook for Windows, and only for the person who set up the subscription.
Outside the mailbox: ChatGPT and Claude
ChatGPT connects to Outlook through its Outlook Email app, which searches and reads your messages and can draft replies; on a work account, an administrator has to allow it, and ChatGPT may ask for your approval before reading or acting. We found no ChatGPT add-in for Outlook itself and no OpenAI help article on Gmail. Without a connected app, you can paste the email or attach it as an .eml file.
Anthropic’s two pages on its Gmail connector disagree: its help center says Claude can draft and, with your approval each time, send, while its connector documentation says it is read-only on Pro and higher plans. Until they match, treat it as a reading and drafting tool, and send from your mailbox yourself.
Every one of these tools reads your mail. What happens to that data depends on your plan and its training settings, which a separate guide of this series covers.
Five ways to keep your own voice
This is our method, built from the companies’ advice:
- Give the facts the AI cannot know: names, dates, the decision, and the one thing you need from the reader. Google advises naming a specific email or file to keep facts accurate.
- Set your tone once. Outlook has Draft Instructions in Copilot’s settings; Workspace, ChatGPT, and Claude all have standing instructions.
- Show two of your own emails and ask the assistant to match their length, greeting, and sign-off. OpenAI and Anthropic both recommend examples.
- Give a word count. “Under 120 words” works better than “short.”
- Rewrite the first and last sentences yourself, then read the draft aloud. Those are the lines readers notice.
Making an email more professional
A consultant in Calgary chasing an unpaid invoice might write a tense first draft, then ask for this:
Rewrite my draft below to be firm and polite, under 120 words.
Keep the invoice number, amount, and due date exactly as written.
End with one clear request: payment by Friday, or a date that works.
---
[paste your draft here]
The middle line protects the facts, and the last line keeps the email pointed at a result. The same request fits in Gmail’s Help me write box or Outlook’s Draft box; Google’s own help page uses “Make it more professional” as an example instruction.
Check before you send
Read each AI draft for three things: facts it added that you did not give, promises you cannot keep, and a tone that does not match your relationship with the reader. Gmail’s Help me write can also pull details from your other emails and Drive files on its own; its Sources button shows which ones, so look before you send.
A better request, a better draft
The structure of a good email request works for any task. See our template for writing prompts.
Catching up on long threads
Before replying to a 40-message thread, let the assistant summarize it. See how to summarize documents and threads, including the summaries built into Gmail and Outlook.