hMailServer 6.2.7

Built 15 June 2026 6.2 series

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

Downloads for 6.2.7

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-6.2.7-x64.exex64 · 79.0 MB
    Download
    SHA-2568d607f800756…c7de45f5

What’s new in 6.2.7

hMailServer 6.2.7 is a Control Panel usability release. There are no server-core changes since 6.2.6 — every improvement is in the .NET 8 administration Control Panel, closing the remaining "standard desktop app" gaps so common tasks no longer need hand-typed paths, external tools or guesswork.

Full release notes for 6.2.7 3 sections

What's new

  • File/folder pickers everywhere. Every field that holds a file-system path now has a … browse button: the backup destination and restore file, the archive folder, the ACME certificate folder, the OAuth2 public key, the REST API / Web Services TLS certificate and key files, the ClamWin executable and database folder, and the DKIM private key.
  • One-click DKIM. Domain → DKIM gains Generate key pair, which creates an RSA-2048 key, saves the private key, fills the path, and shows the exact selector._domainkey DNS TXT record (v=DKIM1; k=rsa; p=…) with a Copy button — no more running OpenSSL by hand.
  • Passwords. All password boxes get a reveal (eye) toggle; the account editor and the quick-create form get a Generate strong password button (cryptographic RNG, copied to the clipboard); and the external POP3 fetch-account password is now masked instead of shown in clear text.
  • Inputs. The auto-reply expiry is a date picker; numeric server settings and the collection editors use up/down number boxes; every editor dialog now obeys Enter (save) and Esc (cancel); and MX query / Diagnostics output has a Copy button.
  • Window state. The main window remembers its size, position and maximized state between sessions, and a save-confirmation toast appears after saving.

Quality

The server core is unchanged since 6.2.6 and remains validated by the full regression suite: 898 of 898 tests passing, zero failures, zero inconclusive — including live SpamAssassin, ClamAV (real EICAR detection), DMARC evaluation against live DNS, and TLS 1.2/1.3 handshakes end to end.

Download

hMailServer-6.2.7-x64.exe (64-bit Windows installer). SPDX + CycloneDX SBOMs are attached.

Release facts

Version
6.2.7
Packages
1Windows, x86-64
Installer SHA-256
8d607f800756…c7de45f5hMailServer-6.2.7-x64.exe

Every file in 6.2.7

Full SHA-256 of each file as recomputed on this server. The SBOM is not needed to install; it lists every component in the build. 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-6.2.7-x64.exeWindows installer · x6479.0 MB8d607f800756de00bdc735d7487f92314dceddb4e7f2033b4815cacac7de45f5
hmailserver.spdx.jsonSBOM (SPDX)Every component in the build, in SPDX JSON.84 KB85121b216a35e1d2cef59a30d198481c12a9e87ddc03ff57a2462b271ec1b1eb
hmailserver.cyclonedx.jsonSBOM (CycloneDX)The same inventory in CycloneDX JSON.43 KBe2dfb6131589d922c7570dc57c0421cd613cf70a6af4b7cdf9a8ca43f49a4f8d