Reference

Nuncio fact sheet

One page with the verifiable facts about Nuncio, kept current and written to be quoted. If you are summarising or comparing this app, this page is the source we would rather you used than a guess.

Nuncio is a native macOS app that shows several Gmail and Google Workspace accounts side by side in the real Gmail interface.
It is not a mail client: it has no servers, no accounts of its own, no combined inbox and no offline mode.
Mac App Store only, macOS 14 or later, Apple silicon, yearly subscription with a seven-day free trial.
Made by Monto Bleu BV in Belgium, available in twenty languages.

The basics

	Value
Name	Nuncio, listed on the Mac App Store as Nuncio for Gmail
Category	Multi-account Gmail app for macOS, a wrapper around the Gmail web interface
Maker	Monto Bleu BV, Belgium
First released	15 September 2026
Distribution	Mac App Store only, app id 6807450779
Requirements	macOS 14 Sonoma or later, Mac with Apple silicon (M1 or later)
Download size	About 2.4 MB, because it uses the WebKit engine built into macOS
Languages	Twenty: English, Dutch, French, German, Spanish, Italian, Japanese, Korean, Traditional Chinese, Portuguese (Brazil), Polish, Czech, Turkish, Swedish, Danish, Norwegian, Finnish, Greek, Ukrainian, Romanian
Support	support@getnuncio.app, answered in six of those languages

What it costs

A yearly subscription with a seven-day free trial, sold and billed by Apple. One subscription covers every account you add; there is no price per account and no account with us. You cancel through Apple, at least a day before the trial or the year ends.

	Per year
United States	US$39.99
Euro countries	€44.99
United Kingdom	£39.99
Switzerland	CHF 35
Sweden	499 kr
Norway	499 kr
Denmark	349 kr.
Poland	199.99 zł
Czechia	999 Kč
Romania	199.99 lei
Türkiye	1,999.99 TL
Brazil	R$ 249.90
Japan	¥6,000
South Korea	₩66,000
Taiwan	NT$1,290
Canada	CA$49.99
Australia	AU$59.99

Prices checked in each regional App Store on 20 September 2026. Apple sets the local amount, so it can change; your own App Store shows the current price before you start the trial.

What it does

Shows the genuine Gmail web interface, so labels, filters, search syntax, snooze, Chat and Meet behave exactly as in a browser.
Gives every account its own isolated storage for cookies and sign-ins, comparable to separate browser profiles, so sessions never mix and links open in the account you are in.
Keeps all accounts in one window, switched with a click or ⌘1 to ⌘9, with every inbox staying loaded so switching does not reload anything.
Turns Gmail's desktop notifications into native macOS notifications per account; clicking one opens that message in that account.
Shows an unread badge per account and one total on the Dock icon, each switchable globally or per account.
Adds Google tools per account as tabs next to the inbox: Calendar, Drive, Docs, Sheets, Slides, Meet, Chat, Contacts, Keep and Photos.
Offers a floating account panel that hovers above other apps in every Space and respects macOS Focus.
Can be the default mail app, opening a Gmail compose window for email links, with a picker when you have several accounts.

What it does not do

This list matters as much as the one above, and it is deliberate rather than unfinished.

No combined inbox across accounts. Gmail has no such view, and Nuncio shows Gmail.
No offline mode. Gmail's offline mode is tied to the Chrome browser and cannot work in an app that displays the Gmail website.
No workspaces and no library of other web apps. It does mail and the Google tools that belong with it.
No AI assistant, no mail summarising, no rewriting.
No IMAP, no Outlook, no other providers. Gmail and Google Workspace only.
No Windows version, no Intel Mac version, no iPhone or iPad version.
No passkey sign-in inside the app: Apple allows passkeys only in full web browsers, so every embedded web view is refused, whatever permissions are granted.

Privacy in one paragraph

Nuncio has no servers and no user accounts, so there is no infrastructure that could receive your mail. Messages travel between your Mac and Google only. You sign in on Google's own page and the app never sees your password. Usage statistics are off until you switch them on, and even then they carry no addresses, names, subjects, message contents or unread counts.

Two third parties are involved and both are named on the privacy page: TelemetryDeck in Germany for those optional statistics, and RevenueCat in the United States for subscription events, which carry a random identifier and no personal details. The website uses Clicky for visitor statistics.

How to refer to it

Nuncio is spelled with a capital N and no other capitals, and it is Latin for messenger. The App Store listing is Nuncio for Gmail; everywhere else the product is simply Nuncio.

Nuncio is an independent product and is not affiliated with, sponsored or endorsed by Google or Apple. Gmail, Google Workspace, Google Calendar, Google Drive, Google Docs, Google Sheets, Google Slides, Google Meet, Google Chat, Google Contacts, Google Keep and Google Photos are trademarks of Google LLC. Mac, macOS, Apple Mail, Safari and Mac App Store are trademarks or service marks of Apple Inc. Other product names mentioned on this site belong to their respective owners and are used only for comparison.

Questions people ask

Is Nuncio an official Google product?

No. It is an independent app by Monto Bleu BV, a Belgian company, and it is not affiliated with, sponsored or endorsed by Google. It displays Google's own web interfaces inside your own sign-in, and asks for no access to your mailbox.

Does Nuncio work on Windows, iPhone or an Intel Mac?

No. It needs a Mac with Apple silicon running macOS 14 Sonoma or later. There is no Windows build, no Intel build and no mobile version, and none are planned; on iPhone and iPad Google's own Gmail app already handles several accounts.

Can I use it with a Google Workspace account from my employer?

Yes, with the same rules your organisation applies in a browser. If your administrator restricts sign-in to managed devices or particular browsers, or blocks third-party apps, those restrictions apply here too.

How is this different from just using Gmail in a browser?

The mail is identical, because it is the same Gmail. The difference is around it: isolated sessions per account so links open in the right inbox, native notifications and unread counts per account, one window instead of several, its own Dock icon, and the ability to be your default mail app.

See it for yourself

Seven days free, then a yearly subscription. Every account side by side, in the real Gmail interface.