I've extracted all of the language/locale versions of Lightning 6.2.2.1 from the Thunderbird 60.2.1 Linux (binary) release tarballs, they are available at:
If you are reluctant to install an extension from some random Internet person (I wouldn't blame you), you can also download the release tarball for your locale from the Thunderbird homepage (https://www.thunderbird.net/), then extract the .xpi file from the thunderbird/distribution/extensions directory (inside the archive).
I've extracted all of the language/locale versions of Lightning 6.2.2.1 from the Thunderbird 60.2.1 Linux (binary) release tarballs, they are available at:
https:/ /www.dropbox. com/sh/ w84dtrc73e90j3p /AABC5CeNN- ZwoNgq9m1hQUs4a /thunderbird- 60.2.1? dl=0&lst= &subfolder_ nav_tracking= 1
If you are reluctant to install an extension from some random Internet person (I wouldn't blame you), you can also download the release tarball for your locale from the Thunderbird homepage (https:/ /www.thunderbir d.net/), then extract the .xpi file from the thunderbird/ distribution/ extensions directory (inside the archive).