As everybody knows, emails are being read and stored. I don't like that so much and installed Enigmail, which enables PGP-encryption for emails in Thunderbird. It took me two days to install and understand the details.
Now that it is working I get aware, that I will never really use it, because my family, friends and clients aren't really interested in generating public and private keys. So I won't be able to send any encrypted messages, nor will receive them.
I'm searching for a simple way to encrypt emails in Ubuntu, without having to bother other people with "strange" petitions about software they would have to install to read my emails.