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Desktop app · Ubuntu & Fedora

Atomic Mail for Linux

A private email client for Linux, built on end-to-end encryption. Install the desktop app on Ubuntu or Fedora and keep your inbox yours.

UbuntuDownload .deb FedoraDownload .rpm
Terminal
sudo apt install ~/Downloads/AtomicMailSetup.deb
sudo dnf install ~/Downloads/AtomicMailSetup.rpm

Run the command for your system, or open the downloaded file with your software installer.

Using another distro? Open Atomic Mail in your browser

  • Free download
  • Tested on Ubuntu and Fedora
  • Same account on every device
Atomic Mail
Atomic Mail inbox in a desktop app window
  1. Open Atomic MailFind it in your app menu like any other app.
  2. Create a free accountPick a username and password. No phone number needed.
  3. Save your seed phraseWrite it down and keep it offline. It's how you recover your account.
Features

The private email client for Linux

Everything you use on Windows, Mac and your phone, now on your Linux desktop. Same account, same encryption, same features.

Encrypted by design

Mail between Atomic Mail users is encrypted on your computer before it's sent, and your stored mailbox uses zero-access encryption, so we can't read it.

10 free aliases

Give sites a different address and keep your real one private. If an alias starts getting spam, you know exactly who leaked it.

No phone number needed

Create an account with just a username and password. No phone, no ID, no link to your other accounts.

Recovery with a seed phrase

Your account is recovered with a seed phrase that only you hold, not through a phone or a backup email.

AI tools that stay private

With Atomic Plus, write, summarize, translate and check grammar right in the app.

Packages for Ubuntu and Fedora

Install from a .deb or .rpm package, like any other Linux app. Tested on Ubuntu and Fedora.

App vs provider

A Linux email client and an email provider aren't the same thing

Thunderbird, Evolution and Geary are email clients: programs that read mail from an account you already have. They don't change who stores your mail or who holds the keys to it.

Email clientThunderbird, Evolution, Geary
Your providerGmail, Outlook.com and others

Your provider stores your mail and holds the keys to it.

Desktop appAtomic Mail for Linux
ProviderAtomic Mail

Zero-access encryption: Atomic Mail can't read your stored mail.

Atomic Mail is both: an encrypted email service with its own address, and a desktop app to use it on Linux. The app works with Atomic Mail accounts; connecting Atomic Mail to Thunderbird and other clients over IMAP isn't available yet and is on our roadmap.

Create a free account
Outlook on Linux

Looking for Outlook on Linux?

Microsoft doesn't make an Outlook desktop app for Linux, so most people use Outlook.com in a browser tab or an unofficial wrapper. If you're on Linux anyway, it's a good moment to move to email that's private by design.

See how Atomic Mail compares to Outlook
Atomic Mail vs Outlook.com on Linux
FeatureAtomic MailOutlook.com
Desktop app for Linux.deb and .rpmNo official app
End-to-end encryption between users
Provider can't read your stored mail
No ads in the inbox
Free aliases1010, with weekly and yearly limits
Works in Thunderbird (IMAP)Not yet, on the roadmap
For teams

Business email for teams on Linux

Run your company's email on your own domain with Atomic Mail Business, from $3 per user per month. Your team reads work mail in the same Atomic Mail apps on Linux, Windows, Mac and mobile.

Explore business email

At a glance

price
Free; AI tools with Atomic Plus
packages
.deb for Ubuntu, .rpm for Fedora
tested on
Ubuntu, Fedora
account
Username and password, no phone number
encryption
End to end between users, zero-access storage
aliases
10 free
recovery
Seed phrase
data location
Germany, ISO 27001 data centres
also on
iPhone, Android, Mac, Windows, web
FAQ

Questions about Atomic Mail for Linux

What is the best email client for Linux?

It depends on what you need. Thunderbird, Evolution and Geary are good for reading mail from accounts you already have. If privacy is the priority, Atomic Mail gives you an encrypted email account and a desktop app for Ubuntu and Fedora in one.

Is Atomic Mail free on Linux?

Yes. The Linux app costs nothing, and the free plan includes end-to-end encryption, 10 aliases and unlimited storage. Atomic Plus is an optional paid plan with more aliases, Hide My Email and AI tools.

Which Linux distributions are supported?

We ship a .deb package for Ubuntu and an .rpm package for Fedora, and both are tested there. On other distributions, use Atomic Mail in your browser.

Is there an AppImage, Flatpak or Snap?

Not at the moment. Atomic Mail for Linux is available as .deb and .rpm packages.

Is there Outlook for Linux?

Microsoft doesn't offer an Outlook desktop app for Linux; Outlook.com works in the browser. Atomic Mail is a private alternative with a desktop app for Ubuntu and Fedora.

Can I add Atomic Mail to Thunderbird?

Not yet. IMAP support is on our roadmap. Until then, use the Atomic Mail app or the web app.

Is my email encrypted in the Linux app?

Yes. The Linux app uses the same encryption as Atomic Mail everywhere else: mail between Atomic Mail users is encrypted on your computer before it's sent, your stored mailbox uses zero-access encryption, and your data is kept in ISO 27001-certified data centres in Germany.

Can I use the same account on my phone and other computers?

Yes. Sign in with the same account on Linux, Windows, Mac, iPhone, Android or the web.

Get started

Download Atomic Mail for Linux

Private, encrypted email on your Linux desktop. Free, no phone number needed.

Download for Ubuntu (.deb) Download for Fedora (.rpm)

Another distro? Use the web app