If you use Gmail you already have access to one of the most useful AI email assistants available — built directly into your inbox. Google Gemini’s integration with Gmail lets you draft emails, summarise long threads and manage your inbox more efficiently without ever leaving your email. This guide shows you exactly how to use it.
What is Google Gemini in Gmail?
Google Gemini is Google’s AI assistant — and unlike Claude or ChatGPT which work in separate windows, Gemini is built directly into Gmail. That means you can access AI assistance without switching tabs, copying text or breaking your email workflow.
The integration is available to:
- Google One AI Premium subscribers — £16/month ($19.99/month)
- Google Workspace Business users — through your organisation’s Google account
- Free Gmail users — with limited access through the Gemini tab
How to Access Gemini in Gmail
- Open Gmail and sign in
- Look for the Gemini icon — a small star or sparkle symbol — in the compose window or sidebar
- On mobile — open the Gmail app and look for the Gemini icon when composing
If you don’t see it yet your account may not have the feature rolled out — it’s available to Google One AI Premium subscribers and Google Workspace users first.
Feature 1 — Help Me Write
This is the most immediately useful Gemini feature in Gmail. When composing a new email:
- Click Compose to start a new email
- Look for the Help me write button — a pencil icon at the bottom of the compose window
- Describe what you need in plain language
- Gemini drafts the email directly in your compose window
- Edit and personalise before sending
Example prompts that work well:
“Write a professional email to my client explaining the project will be delayed by two weeks. Apologetic but confident tone.”
“Write a follow up email to someone I met at a networking event last week. Friendly and brief — suggest a coffee catch up.”
“Write a firm but polite email chasing an overdue invoice of £500 from a client. Professional tone.”
The more specific your description the better the output. Include the recipient context, the tone you want and any specific details Gemini needs to make it accurate.
Feature 2 — Refine Your Draft
Once Gemini has produced a draft you can refine it without starting again:
- Formalise — makes the tone more professional
- Elaborate — adds more detail and context
- Shorten — condenses the email to its essential points
- I’m feeling lucky — Gemini rewrites with its own creative interpretation
These one click refinements are particularly useful when the first draft is close but not quite right — saving the time of rewriting from scratch.
Feature 3 — Summarise Email Threads
Long email threads are one of the most time consuming parts of managing a busy inbox. Gemini can summarise any thread in seconds.
- Open a long email thread
- Look for the Summarise this email button at the top
- Click it and Gemini produces a clear summary of the key points and any action items
This is particularly valuable for:
- Catching up on threads you’ve been copied into
- Understanding the history of a conversation before replying
- Extracting action items from lengthy back and forth discussions
Feature 4 — Ask Gemini About Your Emails
One of Gemini’s most impressive Gmail features is the ability to ask questions about your email history — essentially searching your inbox through conversation.
Click the Gemini sidebar in Gmail and ask questions like:
“What did Sarah say about the project deadline in her last email?”
“Summarise all the emails I’ve received from [company] this month.”
“Did anyone send me information about the meeting next week?”
Gemini searches your inbox and gives you direct answers — significantly faster than manual searching through hundreds of emails.
Feature 5 — Smart Reply Suggestions
For routine emails Gemini suggests short reply options that you can send with one click. These appear below incoming emails as suggested responses.
While the suggestions are sometimes too generic for professional use they’re genuinely useful for quick acknowledgements, simple confirmations and routine responses that don’t require a considered reply.
Gemini in Gmail vs Writing Emails in Claude or ChatGPT
This is a common question worth addressing directly.
Gemini in Gmail wins on convenience — it’s right there in your inbox with no switching between apps. For everyday email volume this integration advantage is significant.
Claude wins on writing quality — for important emails where tone and nuance matter Claude consistently produces more natural, sophisticated prose. For a difficult client email, a sensitive HR communication or an important business proposal writing in Claude and pasting into Gmail produces better results.
ChatGPT sits between the two — capable and fast but slightly less natural than Claude for nuanced professional writing.
The practical approach most professionals use — Gemini in Gmail for everyday routine emails, Claude for important emails where quality matters most.
Gemini in Gmail on Mobile
The Gmail mobile app also includes Gemini features — making AI email assistance available anywhere:
- Open the Gmail app on iOS or Android
- Tap Compose
- Look for the Gemini icon in the compose toolbar
- Tap it and describe your email
Mobile Gemini is slightly more limited than the desktop version but covers the core drafting and summarisation features — genuinely useful for responding to emails on the go.
Privacy Considerations
Using Gemini in Gmail means Google’s AI has access to your email content. For most users this is an acceptable trade off — Google already processes Gmail for spam filtering and other features.
For users handling highly sensitive professional information — legal, medical, financial — consider whether AI email assistance in Gmail is appropriate given your professional obligations and your organisation’s data policies.
If privacy is a priority Lumo by Proton offers AI assistance with end to end encryption — though without the Gmail specific integration.
Tips for Getting Better Results
Be specific in your prompts — the more context you give Gemini the better the output. Include who you’re writing to, what you need to communicate and what tone is appropriate.
Always personalise before sending — Gemini provides a strong draft but your specific knowledge of the recipient and relationship makes every email better. Add personal details, adjust anything that doesn’t sound like you.
Use summarise before replying — for long threads always summarise first to make sure you have the full context before composing your reply.
Combine with Grammarly — run important emails through Grammarly after Gemini drafts them for a final proofread before sending.
Is Google One AI Premium Worth It for Gmail?
Google One AI Premium costs £16/month ($19.99/month) and includes:
- Full Gemini integration across Gmail, Docs, Sheets and Slides
- Access to Gemini Advanced — Google’s most capable model
- 2TB of Google storage
- Additional Google One benefits
For heavy Gmail users who also use Google Docs and Sheets the value is strong — you’re getting AI assistance across your entire Google workflow plus significant storage for one subscription.
For users who only want Gmail AI assistance and don’t use other Google Workspace tools — the value calculation is less clear. The free Gemini features in Gmail cover basic needs without a subscription.
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For Gmail power users:
- Logitech MX Keys Wireless Keyboard — a quality keyboard makes managing high email volumes significantly more comfortable
- Monitor for Home Office — more screen space makes managing Gmail alongside other work tools much more efficient
- Noise Cancelling Headphones — focus during email sessions without distractions
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