Thunderbird Win x86 64-Bit Builds

Much like Firefox, there are some unofficial 64-Bit builds for Thunderbird. They can be found here. However, at this time the most latest version is Thunderbird 7.0.0 (release is 8.0.0). As with any other developmental build, use at your own risk and ideally with a separate profile (this where ProfileMaanger can come in handy). Thanks to Bob Slim for the tip.