What's the proper way to install Enigmail (PGP Signing for Thunderbird)? I noticed that it's in the Ubuntu repositories - is that the proper way to install it, or should I install it from the page on the Thunderbird Addons site? Or does it not matter at all?
I would recommend that you use the version from the add-ons website. It will be more current that whatever's in the repos and t-bird will check to see if there are updates for it.