Download Enigmail 1.0.1 XPI Compiled for Thunderbird 3.0.x in Slackware64 13.1
For those who do not know what the Thunderbird Engimail extension is, visit the Enigmail homepage for more information.
The official Linux release of Enigmail is 32-bit only. I have compiled a version of it for Slackware64 13.1. In order to install it, download the file and navigate to it using Thunderbird’s Add-on manager. There is also a GPG signature for the XPI. It can be verified using my GPG key.