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File Name | Description -- | -- Winget package| Rnwood.Smtp4dev.Desktop Winget package (recommended easy option for Win10/11) Winget package| Rnwood.Smtp4dev Winget package (Win10/11) Rnwood.Smtp4dev-win-x64-3.12.0-ci20260209123_pr1608.zip | Windows x64 binary standalone - Server edition | Windows x64 binary standalone - Desktop app edition. | Windows ARM 64-bit binary standalone | Linux x64 (Intel 64 bit) binary standalone | Linux MUSL x64 binary standalone for Linux distros using MUSL libc | Architecture independent version. Should run on any platform where the .NET 8.0 (or greater) runtime is installed - | .NET tool (recommended option for Mac OS) -