Neruna Join the beta

Download

Become a beta tester.

Neruna Desktop is running – as a beta for Windows. For now we hand out the download personally: drop us a line about the mail server you use, and you'll get the link.

Current version

0.1.13 Beta

October 2026 · Windows x64

Sign up as a beta tester Releases on GitHub

Installed versions update themselves: Neruna downloads updates in the background and installs them at the next start.

System
Windows 10 or 11, 64-bit
Delivery
Installer with automatic updates (approx. 90 MB) or ZIP without installation
Formatting
WebView2 (preinstalled on Windows 11)
Server
IMAP/SMTP, CalDAV, CardDAV or Microsoft 365
Languages
German, English, French, Italian
Note
The beta isn't signed yet: Windows SmartScreen will ask – “More info” → “Run anyway”.
Linux · macOS
Can be built from source; ready-made packages are planned.

In three steps

  1. Install

    Run the installer (with automatic updates) or unpack the ZIP. Windows SmartScreen asks once: “More info” → “Run anyway”.

  2. Add an account

    Enter your email address and password – Neruna finds the server settings itself. Or choose “Microsoft 365 / Outlook.com” and sign in in the browser.

  3. Get going

    Folders, calendars and address books appear after the first sync. Language, design and signatures live under Settings.

Documentation

Releases

What's in it. What's next.

0.1.13 Current

October 2026 · Windows x64

  • Birthday and public holiday calendars (CH with all cantons, LI, DE, AT, FR, IT)
  • Neruna as default mail program for mailto: links and .eml files
  • Blind copy (Bcc) when writing, shown when you need it
  • Microsoft 365 and Outlook.com: mail, calendar and contacts with the Microsoft sign-in; interface in German, English, French and Italian
  • Edit accounts, aliases, favourites, folder subscriptions, new “Manage calendars”
  • Answered/forwarded marks, customisable bar, installer with automatic updates
  • Text templates with shortcuts, also as fill-in tables
  • Dark theme for mail too, contact picker and address suggestions when writing
  • Invitations, reminders, automatic drafts
  • New mail right away, notifications, server search
  • Email via IMAP/SMTP with offline cache
  • HTML editor, signatures, pop-out
  • S/MIME: automatic signing & encryption
  • Calendar: list, time grid, month overview, subscriptions
  • Contacts: address books, groups, photos
  • Design: light/dark, three colour schemes

Neruna Cloud Beta

neruna.cloud · hosted in Switzerland

  • Portal for users, groups, devices and licence
  • Central signatures and text templates per group
  • Chat: rooms, private messages, online status
  • Distribute S/MIME certificates – zero knowledge
  • Distribute mail accounts and server profiles
  • Personal backup in the vault, restore on a new device