AI guide · Gemini

How to Use Gemini in Gmail

Gemini writes the email for you right inside Gmail: a new message, a reply, or a cleaner version of what you typed. Change it with one line, undo it, and check it before you send.

About 10 minutes · Beginner · Checked Oct 19, 2026

What Gemini does in Gmail, in one minute

Gemini is Google's AI, and part of it is built into Gmail. You don't open another site or copy anything: in the window where you write an email, you tell it what you want to say, and it writes the email there. You can ask for a change, undo it, or have it clean up text you typed yourself.

The writing part works on a free Gmail account. On ours (checked 10/19), "Help me write" was in every new email and every reply, and "Polish" showed up on text we typed. Google says it's for personal accounts in the US, and it started in English. On ours, a request in Spanish got an email in Spanish too.

Some of Gemini in Gmail needs a paid plan: the Gemini panel on the side of Gmail, asking questions about your whole inbox, and Proofread. Gemini inside Google Docs needs one too. On our free account, those showed only an offer to upgrade.

Which way to use

Gemini in Gmail is the fastest way when the email starts and ends in Gmail. Other guides cover the jobs around it.

Use Gemini in Gmail when

  • You know what you want to say, and want it written well, fast.
  • You're answering an email, and want the reply to use what the email says.
  • You typed a quick, messy note, and want it clean before you send it.

Use something else when

  • Work on an email in a chat: A hard email, a quote to follow up, or a file to work from. In ChatGPT or the Gemini app you can go back and forth more.

    Read the guide
  • Answer a review, not an email: A customer wrote about you on Google or Yelp, and you want a calm, short public answer.

    Read the guide
Gemini writes, but you send. Read every draft before you click Send: it can get a name, a date or a price wrong.

Your first email with Gemini, step by step

A real example: Dan, who runs a small bike repair shop, wants to tell a customer, Mike, that his bike is ready. The pictures use Gmail on a free account, on a computer.

  1. Step 1: Start a new email

    Go to gmail.com and sign in. At the top left, click "Compose". A new email opens at the bottom right.

    The top left of Gmail, with the Gmail logo and the Compose button marked.
  2. Step 2: Click Help me write

    At the bottom of the email, next to Send, click the pencil with a small star: that's "Help me write". A box opens above it that says "Describe your message".

    An empty New Message window, with the Describe your message box at the bottom and the Help me write button marked in the toolbar.
  3. Step 3: Say what the email should say

    Type who it's for, what to tell them, how it should sound, and how to sign it. Then click the arrow, or press Enter. Ask for your own name at the end: on our account, Gemini first signed with the name on the Google account.

    The Describe your message box marked, with Dan's request typed: a short email to Mike, a customer, saying his bike is ready after 3 pm on Friday, friendly, under 60 words, signed Dan, Dan's Bike Shop.
  4. Step 4: Read the draft it writes

    In a few seconds, the email is in the window, ready to send. Read all of it: the name, the day, the time. Under it, a thumbs up or down tells Google if the draft was good.

    The draft Gemini wrote, marked: Hi Mike, your bike repair is complete and ready for pickup, after 3:00 PM this Friday, signed Dan, Dan's Bike Shop. Thumbs up, thumbs down and report buttons under it.
  5. Step 5: Ask for a change in one line

    Something to add or fix? Type it in the box at the bottom, which now says "Describe your change", and send it. Dan added the time the shop closes, and Gemini rewrote the line about pickup.

    The same draft, with the Describe your change box marked and the request typed in it: Add that we close at 6 pm on Friday.
  6. Step 6: Go back if you liked it better before

    The new version now says "between 3:00 PM and 6:00 PM". If a change made it worse, click the curved arrow at the right of the box (Undo). The arrow next to it (Redo) brings the change back.

    The changed draft, now with pickup between 3:00 PM and 6:00 PM this Friday, and the Undo and Redo arrows marked at the right of the box.
  7. Step 7: Change the tone with one click

    Click the three dots in the box for ready-made changes: Formalize (more formal), Friendly, or Shorten. When the email is right, add the address and a subject, and click Send.

    The three dots menu open over the draft, marked, with Formalize, Friendly and Shorten.

Members

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In the rest of this guide

  • 8 emails to write with Gemini, with prompts to copy

    • Your order is ready
    • A delay, said plainly
    • A follow-up on a quote
    • A reminder about an invoice
    • Thanks after a first order
    • New hours or a closed day
    • Saying no, nicely
    • A question to a supplier
  • More ways to use it

    • Clean up what you typed
    • Your words, clean
    • Reply with Help me write
    • A summary of a long thread
    • Suggested replies
    • What needs a paid plan
    • If you don't want it at all
  • When something goes wrong, and how to fix it

    • You don't see Help me write
    • The email is signed with the wrong name
    • The draft says something you didn't
    • A change made the email worse
    • Gemini asks you to upgrade

Where to go next

Gemini in Gmail writes the email. These guides help with what's around it.