An e-mail client for Windows that starts fast, searches inside messages and builds its address book on its own. Unified inbox across accounts, labels visible in other clients too, snooze and send later, calendar with invitations, S/MIME digital signatures, full mailbox backup and tracking-pixel blocking. Czech data boxes (ISDS) sit right next to regular mail — received and sent, including documents. It logs in to them only on click, because logging in legally delivers the messages. Your mail stays on your computer: mailniño has no server and no accounts, and nowhere to send your mail. Passwords are kept in the Windows Credential Manager. Available in Czech, Slovak, English, Spanish, Ukrainian and German.
Yes, mailniño is free to download and use on Windows.
What is the latest version of mailniño?
The latest version is 1.4.0, released on Oct 23, 2026.
Is it safe to download mailniño?
The download button links to the official installer published on mailnino.cz, the same file Windows Package Manager installs. You can verify the downloaded file by comparing its SHA-256 checksum with 7addd5a70e244aa65ed96cdf3acf42b76a6d3e206e0681e403591f40921381ac.
Which Windows versions does mailniño support?
mailniño requires Windows 10 or later and is available for 64-bit (x64) systems.
How do I install mailniño silently?
Run the offline installer with "mailnino_1.4.0_x64-setup.exe" /S, or install it with Windows Package Manager: winget install --id=MichalFoist.mailnino -e --silent.
How do I uninstall mailniño?
Open Settings › Apps › Installed apps, find mailniño and select Uninstall. From the command line, run winget uninstall --id=MichalFoist.mailnino -e.
Alternatives to mailniño
Other Client Communication programs for Windows from different developers.
