Email Security Matters

We should be concerned about our client-server email communications! Email communications are accomplished through SMTP at one side and POP3/IMAP at the other side and all of them use "plain text" transmission by default! This means someone with some packet analyzer tool and some opportunity to get to the right place can easily read your username and password as well as the content of your messages which at least are supposed to be kept "personal"! In most cases the acquired username/passowrd is also used for network login access which makes it really cool!
So email security is worth giving it some thought!