E-mail encryption is getting more and more important as more information is accessible to your ISP, e-mail provider or even your government. In this tutorial I won’t be going into any of the principles for why you should encrypt your e-mail or how it works – I rather assume that you have already realized the dangers of letting your personal e-mails swarm around on mail servers open for everyone to read.
In this tutorial I’m going to use Thunderbird on Ubuntu. If you are running Windows or another Linux distro, you might need to do some extra modifications. I’ll see if I might implement those at a later point in time, but for the moment being you are on your own.
First of all, you should have Thunderbird installed. This is done through the Ubuntu Software Center, which you find by clicking Applications > Ubuntu Software Center.