hMailServer 6.1.0

Released 12 June 2026 6.1 series

This is not the current release. hMailServer 6.3.3 is the one to install unless you need this exact version.

Downloads for 6.1.0

Windows

Windows 10 (version 1607 or later) and Windows 11, or Windows Server 2016 and newer; 64-bit only. Run the installer as an administrator: it upgrades an installation older than this version in place, and it cannot go backwards — an older server refuses a database a newer one has upgraded, so back up the database and the data directory first. It is not Authenticode-signed, so Windows names an unknown publisher and SmartScreen warns before it will run it.

  • hMailServer-6.1.0-x64.exex64 · 7.8 MB
    Download
    SHA-256d515f29c34ba…07c0eeca

What’s new in 6.1.0

hMailServer 6.1.0 - a complete UI/UX modernization across the desktop Administrator, a brand-new web interface, and the installer.

Full release notes for 6.1.0 3 sections

Web Control Deck (new)

A sleek, futuristic web admin UI served directly by the built-in REST API listener - no extra components. Enable \RestApiPort\ in hMailServer.INI and browse to the server: live dashboard with animated counters and session stats, domain & account management, delivery-queue retry/delete, and publish-ready DANE TLSA records. Light/dark themes with toggle; sign-in uses the administrator credential.

Administrator (desktop)

  • Full light/dark theme engine: deep-space dark and clean light palettes applied across every pane and dialog, dark window title bars, native dark scrollbars, themed menus
  • Theme toggle in the View menu - follows the Windows app-mode preference by default, choice persisted
  • Ctrl+K command palette: fuzzy-search every settings page and jump straight to it
  • Modernized dashboard: glow accents, eased value animations, hover-highlight stat cards

Installer

  • Modern wizard branding
  • Ships the WebAdmin payload

Server core is unchanged from 6.0.0 build 4 apart from the new web-page endpoint. Validated by the full regression suite: 898/898 tests passing, zero failures (MariaDB backend, live SpamAssassin + ClamAV, TLS 1.2/1.3 end to end).

Release facts

Version
6.1.0
Packages
1Windows, x86-64
Installer SHA-256
d515f29c34ba…07c0eecahMailServer-6.1.0-x64.exe

Every file in 6.1.0

Full SHA-256 of each file as recomputed on this server. Nothing in this release is signed — the signing workflow came later — so the hash above is this server’s own recomputation rather than a check against something the project signed.

FileWhat it isSizeSHA-256Signature
hMailServer-6.1.0-x64.exeWindows installer · x647.8 MBd515f29c34ba4a60c9778d3617e6385f0a4e5cc8c885f0bb85656cab07c0eeca