NuncioAll your Gmail accounts.
One simple Mac app.
Nuncio — Latin for messenger. It delivers your mail; it doesn’t read it. Every account side by side in the real Gmail interface: native, lightweight and free of anything you didn’t ask for.
macOS 14+ · Apple Silicon
For Gmail. For all your accounts. Above all, simple.
Real Gmail
Not a rebuilt mail client — the real Gmail web interface, with everything you know, from labels to keyboard shortcuts. Works with regular Gmail addresses and Google Workspace.
All your accounts
Every account fully signed in on its own, side by side in one window. Switch with a click or ⌘1–9 — always instant, never a reload. Badges per account, one total in the Dock.
Lightweight by design
Native Swift and the WebKit already in macOS — no bundled browser engine. Slows down in Low Power Mode, pauses when the screen sleeps.
Every account truly separate. All of them one key away.
Each account signs in on its own, in its own isolated storage — like separate browser profiles. They never mix, and they’re all right there.
Truly isolated
Own sign-in, cookies and site data per account. Nothing bleeds between them.
Instant switching
One click or ⌘1–9. Every account stays loaded, so switching never waits.
Badges per account
Unread counts on every circle, one total in the Dock — each counter switchable.
Tools per account
Calendar, Drive and Docs open as tabs inside the account they belong to.
Your mail — and everything that belongs with it.
Mail is the heart of Nuncio, but a working day rarely stops there. Press + in the tab bar and add the Google tool you need — inside the account you’re in, signed in as that account, opened as a tab right next to your inbox.
Your mail in view, even when Nuncio isn’t.
A small panel that floats above all your other apps, in every Space: your accounts with their unread counts, always at a glance. When mail arrives, a card slides out — click it and you’re on the right message in the right account.
Drag it wherever you like, vertical or horizontal, choose per account whether it joins — and it respects your Mac’s Focus mode.
Everything you need. Nothing that distracts.
Native notifications
On or off per account; a click opens the exact message in the right account.
Dock badge
One total across all accounts — and every counter can be switched off.
Compose as a tab
Pop-out mail windows become tabs in the bar — nothing gets lost behind the app.
Default mail app
Click any email address anywhere → pick your account, message ready to write.
Links to your browser
External links open outside the app; Google links open in the right tab.
Google tools per account
Calendar, Drive, Docs, Sheets, Meet and Keep — each inside its own account.
Light and dark
Follows your Mac, or force a mode — the web apps recolor along.
Light on the battery
Native Swift and WebKit; slows in Low Power Mode, pauses when the screen sleeps.
Downloads at hand
A bar at the bottom with progress per file; click to open, right-click for Finder.
No workspaces.
No library of a thousand web apps, no tabs into your entire life. Nuncio does one thing — your mail, with the Google tools that belong with it — and does it simply, lightly and well. That’s not a limitation; that’s the point.
Yours, on your Mac.
Nuncio has no servers of its own and no accounts of its own. Each mailbox lives in its own isolated storage on your Mac, like separate browser profiles. Nothing about your mail is ever collected — not the addresses, not the subjects, not the counts. Anonymous usage statistics are off by default; if you switch them on, they say something about your settings, never about your mail.
A real person answers.
Nuncio is made by a small team in Belgium. Questions, bugs, or something that just doesn’t behave? Write to us — in English, Dutch, French, German, Spanish or Italian. The app itself speaks twenty languages.
Email us
The fastest way to reach us. Mention your macOS version and how many accounts you use.
support@getnuncio.app
Read the FAQ first
Most questions have an answer already — notifications, badges, the floating panel, signing in.
Browse the FAQ
Privacy questions
What leaves your Mac, what doesn’t, and why there is nothing for us to collect.
Privacy policy
Questions about Gmail on the Mac
Is there a Gmail app for Mac?
Not from Google: on a Mac, Gmail officially lives in the browser. A dedicated app such as Nuncio fills that gap.
Can I keep multiple Gmail accounts open at the same time on a Mac?
Yes, as long as every account gets its own session. That is exactly what Nuncio does.
Is a third-party Gmail app safe?
It depends on whether the app asks for access to your mailbox. Nuncio asks for none and shows Gmail's own website.
Does Nuncio read or store my email?
No. Your mail travels between your Mac and Google only, and Nuncio has no servers.
How is Nuncio different from Apple Mail or Mimestream?
Those are mail clients with an interface of their own. Nuncio shows the real Gmail, per account.
Can I get Gmail notifications on my Mac without keeping Chrome open?
Yes. Nuncio delivers native macOS notifications per account, with no browser running.
How do I make Gmail the default mail program on a Mac?
In Apple Mail's settings, pick an app that opens Gmail as the default email reader.
What does Nuncio cost, and is there a free trial?
A yearly subscription with a seven-day free trial, billed by Apple. One subscription covers all your accounts.
Read on
Gmail on the Mac: frequently asked questions
Straight answers about Gmail on a Mac: whether there is an app, keeping several accounts open, notifications, default mail, passkeys, privacy and what Nuncio costs.
How to use multiple Gmail accounts on a Mac
Why Google's account switcher keeps opening the wrong inbox, and four ways to run several Gmail accounts side by side on a Mac, with the trade-offs of each.
How to get a Gmail app for desktop (Mac or PC)
Gmail has no official desktop app. The four ways to run Gmail on a Mac or Windows PC, what each one gives up, and the best setup for several accounts.
On the Mac App Store.
All your Gmail accounts side by side, the real Gmail interface, native notifications. Seven days free, then a yearly subscription.
macOS 14 or later · Apple Silicon