An AI assistant for Gmail™ that remembers your context and masks selected words before sending data to the AI. Instead of explaining everything from scratch, you can pick up right where you left off, without leaving your usual screen.
After each conversation, NMai creates a short summary card of about 300 characters and compiles each day’s cards into a daily highlight that carries over to your next conversation. Even “When did we talk about that?” can be traced back through your memory.
Register the words you don’t want to leave your company, and NMai masks them automatically before they reach the external AI. Project names, client names, and other terms unique to your company stay protected.
Your inputs and the AI’s responses are not used to train models. NMai uses a paid commercial API, automatically deletes full conversation text after 7 days, and keeps only summaries over the long term.
A business day begins by opening your email. NMai is right there, next to Gmail™. Without adding another app, you can ask about anything on the spot, all within your company’s Google account.
Because your company’s AI access point is consolidated inside Gmail, you can prevent “shadow AI” — employees using personal AI tools on their own phones — not by banning it, but by replacing it.
From a spark of an idea to reality. NMai stays with you all the way as your ideas take shape.
NMai focuses only on what AI “can’t do, and people struggle with.” We list what NMai can’t do, too.
| Typical AI chat | NMai | |
|---|---|---|
| Remembers earlier conversations | △ | ○ |
| Continues without splitting into separate chats | × | ○ |
| Restates your premises every time, so it doesn’t drift | △ | ○ |
| Masks confidential words before sending | × | ○ |
| Also checks the contents of images and PDFs | × | ○ |
| Conversations are not used for training | △ | ○ |
| Works next to Gmail | × | ○ |
| Works on a smartphone | ○ | ○Install it on your home screen and open it as an app (on iPhone, connect once with a code) |
| Image generation | ○ | ×Use with other AI tools |
| Choice of AI models | △ | ×Gemini™ only (completed within Google) |
| No usage limits | △ | ×Limits apply to both free and paid plans |
After each conversation, NMai creates a “REF card” with key points, tags, and the date, and compiles each day’s memories into a “highlight.” The next time you open it, NMai starts with those memories already loaded. No more pasting your background in again — the conversation picks up where it left off.
What you discussed on your computer is still there on your phone. Put it on your home screen and it opens straight from the icon. On iPhone, you enter a connect code once at the start. It is a normal app screen, with no address bar.
Opening NMai from the Gmail app, putting it on your home screen, and the connect code on iPhone are all covered in Using NMai on your phone.
Installation steps, and what needs a computer, are also covered in the FAQ.
On the free plan, reopen NMai once from the card in Gmail when the month changes, or after seven days without use (you do not need to reinstall the app). If you use it from the home screen icon on iPhone, reconnect with a connect code. On the paid plan, as long as you open it from time to time while your subscription is active, you do not need to reopen it from the card.
NMai runs inside the Gmail™ app. There is nothing to install.
How to set it up (1 min 50 sec, no sound)
NMai opens. That is all you need to start using it.
Opening an email is only how the NMai card gets onto your screen. It does not mean NMai has permission to read your mail.
NMai lives inside Gmail. On a phone, the card appears inside the Gmail app; on a computer, it appears on the right-hand side of Gmail in your browser.
This lets you open NMai straight from an icon, without going through Gmail each time.
Gmail’s in-app browser does not offer “Add to Home Screen.” If you don’t see it, use the … menu to reopen the page in Safari or Chrome™, then tap the share button again.
On Android, if you use the “⋮” menu, choose “Install app” or “Add to Home screen.” Either route is correct.
On iPhone, the browser and a home screen icon remember things in separate places. So the first time you open NMai from the icon, you’ll see the First-time setup screen. Connect them once, like this:
Once connected, NMai opens right up. From then on, the icon is all you need.
The code works for 10 minutes, up to 3 times. If it has expired, go back to step 1 and get a new one.
Android doesn’t need this step. Add it to your home screen and it just opens.
On the free plan, you’ll occasionally need to reconnect. When you see Please reconnect, do this:
On a paid plan the session lasts longer, so you can keep using NMai without reconnecting.
Rather than adding more things it can do, we decided what it should never do. NMai does not request permissions it doesn’t need.
The free plan has no time limit. When your memories grow and you want to reach further back, consider the paid plan.
Price in Japan: JPY 1,980 per month (tax included). For users outside Japan, applicable local taxes may apply. Data older than 90 days is never deleted. On the free plan, recall is limited, but you can use it again by upgrading to the paid plan. Usage limits are shown within the service.
NMai is a Google Workspace™ add-on that operates within the Gmail™ side panel.
For questions about getting started, please feel free to contact us.
Google, Google Workspace, Gmail, Google Drive, Google Docs, Google Chrome, and Gemini are trademarks of Google LLC. Safari, iPhone, and App Store are trademarks of Apple Inc.