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How to Use Gemini in Gmail

Open Ask Gemini in Gmail, summarize threads, draft with Help me write, search your inbox in plain language, and confirm inbox actions before they run.

September 18, 2026 Yum News

Gmail already stores the threads you need to act on. Gemini in Gmail keeps that work inside the inbox: a side panel that can summarize a thread, draft a reply, look up a flight or package, propose a calendar slot, and—after you confirm—archive, label, or delete matching mail.

This guide follows Google’s own Gmail Help and Workspace product pages. Availability still depends on your Google AI or Workspace plan, language, and whether an admin has turned Gemini on for Gmail.

Person checking email on a laptop

What Gemini can do in Gmail

Google’s current Gmail Help article lists these jobs for the side panel:

Summarize long threads into short bullets
Draft new mail or refine a draft for tone and clarity
Organize mail by asking Gemini to archive, delete, label, star, or mark messages read—after you confirm
Search for facts such as flight times or tracking numbers
Schedule meetings using your primary Google Calendar

You can also add Drive files as sources, generate a Doc, Sheet, or Slides file from a prompt, generate an image, manage tasks, and run a Gem or a Workspace Studio skill if you already created one.

Gemini does not create new Gmail labels. It will not mark mail as spam in bulk. It will not process a request that matches more than 10,000 threads.

Open the side panel

Open Gmail on the web.
At the top right, click Ask Gemini.
Type in the prompt box at the bottom of the panel and click Submit.
Optional: use View to switch between a side layout and a wide layout.

From More options you can open conversation history, Gems, settings, and feedback. Use Add source (or type @) when a draft should quote a Drive file instead of guessing.

If you do not see Ask Gemini, check that Gemini for Gmail is on for your account and that Smart features in Gmail, Chat, and Meet plus Google Workspace smart features are enabled. Workspace admins control access in the Admin console.

Summarize a thread you are already in

Open the conversation first so Gemini has context, then use the panel.

Useful prompts from Google’s examples:

“Create a list of action items for me based on this email.”
“Explain this email to me like I’m 5 years old.”

Some threads also show a Summarize this email control at the top of the message. Use that when you only need a catch-up, then switch to the panel if you need next steps or a reply.

Treat the summary as a map. Open the original messages before you commit to a deadline or a dollar amount.

Laptop with email and notes

Draft and refine with Help me write

Help me write lives in the compose window, not only in the side panel.

Click Compose, or open a reply.
In the bottom left of the window, click Help me write.
Enter a prompt. Google’s examples include “A thank you letter for my job interview” and “Ask my friend for restaurant recommendations in Toronto.”
Click Create.
Optional: Recreate for a new version, or Refine and pick Formalize, Elaborate, or similar tone controls.

You cannot step back to an earlier generated version after Recreate. Copy the text you like into the message body before you regenerate.

For a reply that should quote a spec or a pricing sheet, @ the Drive file or use Add sources → Add from Drive. Do not paste secrets into the prompt if the file is already in Drive and you can attach it as a source.

Ask the inbox in plain language

Two search paths exist. Do not mix them up.

Ask Gemini (side panel) can look through previous mail for reservations, flights, and packages:

“When is my package arriving?”
“What time is my next flight?”
“Show my unread emails.”
“Emails from [person] sent last week.”

For answers that must come from the public web, Google says you must include a phrase such as “Use Google Search” or “Using web search” in the prompt.

AI Overviews in the Gmail search box are a separate feature. You type a natural-language question in the search bar and press Enter. Gmail can show a short answer above the results, synthesized from mail that matches the question.

Google’s Help article still notes that AI Overviews are rolling out and may not appear for every account. The 15 September 2026 Workspace Updates post said access was expanding globally for paid plans with Gmail language set to English. Search operators such as is:unread or from: turn the Overview off.

Example questions Google lists: “When is my flight to Hawaii?” and “When is the next meeting with my manager?”

Calendar, tasks, and files without leaving Gmail

Gemini can only read and create events on your primary calendar. Prefix the prompt with @Calendar when you want that source named explicitly.

Examples from Help:

“What’s my first meeting tomorrow?”
“Create a 30 minute meeting with Kevin this week.”
“Schedule 1 hour of focus time for me this week.”
“Reschedule meeting with Lori to next week.”

If an email already contains event details, Gmail may show Add to calendar above the message. Confirm the extracted time before you save it.

Tasks work the same way from the panel: list today’s work, add a task, change a date, mark complete, or delete.

You can also ask Gemini to create a Google Doc, Sheet, or Slides file from the panel. For Slides, keep the Gmail tab open until generation finishes. Google says that can take several minutes.

Organize mail—but only after you confirm

Inbox actions are explicit. Gemini shows a confirmation card or a list of matching threads. Nothing is archived, deleted, labeled, starred, or marked read until you confirm. After confirm you have 60 seconds to undo. A new prompt, or waiting longer than a minute, drops the undo window.

Examples Google documents:

“Archive emails from John Ryan that are older than 30 days.”
“Delete emails from Eva Smith received in the last week.”
“Label emails from Luciano Reyes as Important.”
“Mark all unread emails from Alberta Ilagan as read.”
“Star all emails from Sullivan Lui.”

If a bulk delete already left undo, recover messages from Trash. Trash is emptied after 30 days.

Gems and skills

If you already built a Gem at gemini.google.com, open More options → Gems in the Gmail panel and continue the conversation with that Gem. Not every language supports Gems.

Skills come from Workspace Studio. Create the skill, turn it on, then type @ in the Gmail panel and pick it from autocomplete. Google’s example is a “Client Communication” skill that holds brand tone so drafts stay consistent.

A short first session

Open a long thread you already understand.
Ask for action items only. Compare them to the original messages.
Open Help me write on a reply that is not urgent. Refine once, then edit by hand.
Ask the panel for one calendar fact you can verify in Calendar.
Skip bulk delete until you have watched a confirmation card on a low-stakes archive.

That sequence shows the two failure modes: invented details in summaries, and over-broad inbox actions.

Notebook and phone beside a laptop

Limits worth planning around

Gemini in Workspace can be wrong. Check names, dates, amounts, and legal language.
Web answers need an explicit “use Google Search” style phrase in the side panel.
AI Overviews in search are still rolling out and may be limited by plan, country, and English language settings.
Bulk organize stops at 10,000 matching threads and cannot create labels or mark spam.
Calendar create/reschedule is primary calendar only.
Generated images and Workspace-file generation are extra tools, not a substitute for review.

Personal Google AI plans and Workspace plans both gate features. If a control is missing, it is usually plan, admin policy, or rollout—not a hidden setting in the compose window.

Conclusion

Use Ask Gemini when you need a summary, a lookup, a calendar slot, or a confirmed inbox action. Use Help me write when the compose window is already open. Use the search-box AI Overview when you have a single fact question and the feature is on for your account.

Keep confirmation on for organize actions, add Drive sources instead of pasting files, and read the thread before you send anything Gemini drafted.