enigmail 1.9.8 in Ubuntu 16.04

[Ralf Mardorf]

On Mon, 2017-08-28 at 13:55 +0200, Ralf Mardorf wrote:
> cd ~/Downloads/
> wget https://tails.{c3l.lu/tails/stable/tails-amd64-3.1/tails-amd64-3.1.iso,boum.org/torrents/files/tails-amd64-3.1.iso.sig}
> gpg --keyserver hkp://pgp.uni-mainz.de --recv-keys 79192EE220449071F589AC00AF292B44A0EDAA41
> gpg --keyid-format 0xlong --verify tails-amd64-3.1.iso.sig tails-amd64-3.1.iso

Or you do it as explained here:

https://tails.boum.org/install/download/openpgp/index.en.html

Strange enough, they provide a Firefox add-on:

https://tails.boum.org/install/download/index.en.html