Mac OS X

for Thunderbird & SeaMonkey "comm-release" (Universal Binary i386/x86_64)
enigmail-nightly-comm-release-macosx.xpi ( build date: 2012-01-26 version: 1.4a1pre )

for Thunderbird & SeaMonkey "comm-beta" (Universal Binary i386/x86_64)
enigmail-nightly-comm-beta-macosx.xpi ( build date: 2012-01-25 version: 1.4a1pre )

for Thunderbird & SeaMonkey "comm-aurora" (Universal Binary i386/x86_64)
enigmail-nightly-comm-aurora-macosx.xpi ( build date: 2012-01-25 version: 1.4a1pre )

for Thunderbird & SeaMonkey "comm-central" (Universal Binary i386/x86_64)
enigmail-nightly-comm-central-macosx.xpi ( build date: 2012-01-26 version: 1.4a1pre )