Aster Mail is a cross-platform, end-to-end encrypted email client built for Aster Privacy. Features quantum-safe encryption and zero-knowledge architecture.
Publisher’s description
What is Aster Mail?
Aster Mail is an open-source encryption program for Windows from Aster Privacy. It ranks 48th by popularity among encryption in this catalogue. It is written in TypeScript.
Installation and requirements
Official installers exist for 64-bit as EXE (NSIS). It can be installed for the current user only, without administrator rights. The installer supports unattended (silent) installation.
Updates and version history
The current version is 1.4.78, released on October 26, 2026. 30 versions are listed since June 7, 2026, each with links to its own installer files. The last update is less than a month old.
Popularity and file types
The source code on GitHub (Aster-Privacy/Aster-Mail) has 84 stars. Similar programs include Cryptomator, GNU Privacy Guard and Keybase.
Project description on GitHub: “Cross-platform encrypted email client for Aster”
Pros / Cons
Pros
- Open source: the code can be inspected and built by anyone
- Documented silent install
- Installs without administrator rights
- Updated in the last two months
Cons
- No native ARM64 build
In short: Aster Mail is an open-source encryption tool for 64-bit PCs. Administrators can deploy it unattended.
Is Aster Mail safe to download?
- The file is served by github.com, the publisher’s own domain
- The download link uses HTTPS
- A SHA256 hash is published, so you can verify the file:
7CC3A8978023F9450798092B327CE2BF312BF10967EB2E7AF20766A1D5A326C7· Open the VirusTotal report for this hash - The link has not been checked yet
- The source code is public
- ExeAtlas does not host, wrap or modify installers
Related guide: How to check a file’s SHA256 hash on Windows
Recent versions
All 30 versions ›| Version | Date | Size | Files |
|---|---|---|---|
| 1.4.78Latest | October 26, 2026 | — | 64-bit EXE (NSIS) |
| 1.4.76 | October 25, 2026 | — | 64-bit EXE (NSIS) |
| 1.4.75 | October 18, 2026 | — | 64-bit EXE (NSIS) |
| 1.4.71 | October 5, 2026 | — | 64-bit EXE (NSIS) |
| 1.4.68 | September 29, 2026 | — | 64-bit EXE (NSIS) |
| 1.4.66 | September 4, 2026 | — | 64-bit EXE (NSIS) |
| 1.4.65 | August 31, 2026 | — | 64-bit EXE (NSIS) |
| 1.4.64 | August 17, 2026 | — | 64-bit EXE (NSIS) |
Install from the command line
Silent install ›winget install --id AsterPrivacy.AsterMail -eAster-Mail-x64-setup.exe /SRelated guide: How to use winget: install and update apps
Information
- Publisher
- Aster Privacy
- Category
- Encryption
- Licence
- AGPL-3.0
- Price
- Free
- Source code
- github.com/Aster-Privacy/Aster-Mail
- Written in
- TypeScript
- Requires
- Windows 11 / 10
- Architecture
- 64-bit
- Installer
- EXE (NSIS)
- Version
- 1.4.78
- Released
- October 26, 2026
- Added to the catalogue
- June 15, 2026
- Versions listed
- 30
- GitHub stars
- 84
- GitHub forks
- 7
- Website
- astermail.org
- winget ID
- AsterPrivacy.AsterMail
Ratings and reviews
No reviews yet. Be the first to rate it.
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Frequently asked questions
Is Aster Mail free?
Yes. Aster Mail is open-source software under the AGPL-3.0 licence.
Is Aster Mail safe to download?
The download comes from github.com, which belongs to the publisher; ExeAtlas does not host or change the file. Compare its SHA256 hash with the one shown here, or open the VirusTotal report for that hash.
How do I install Aster Mail with winget?
Open PowerShell or Windows Terminal and run the winget command shown on this page. winget downloads the official installer and checks its SHA256 hash before running it.
Can Aster Mail be installed silently?
Yes. The silent install page lists the exact command for each installer.
Does Aster Mail run on ARM (Windows on Arm)?
There is no ARM64 build; Windows 11 on Arm can run the 64-bit version through emulation.
Where can I download an older version of Aster Mail?
The versions page lists all 30 versions with links to their official installer files, back to June 7, 2026.
Can I use Aster Mail without administrator rights?
Yes, there is a per-user installer that does not need administrator rights.
What are alternatives to Aster Mail?
Cryptomator, GNU Privacy Guard, Keybase, i2pd and KopiaUI. The alternatives page compares them.
