Email is nowadays the most widespread technology used for personal communication on the net. Alltough it is often not secured for privacy and it is being easily intercepted by all kind of third parties: to enforce governmental control, market surveys and spionage. If you are concerned about privacy then you probably allready heard about the solution to secure email communication: encryption.
Encryption is a technique based on mathematical formulas, it can ensure security in your communication by using two keys: a private and a public one, you will give the public to your friends while keep the private one to decypher the messages you receive - everyone wanting to send you a secure message will need to use your public key to encrypt it and only your private key will be able to decrypt it. For more information on its usage and implementation refer to the web pages on http://www.gnupg.org
Dyne:bolic comes equipped with a popular email program: Thunderbird which can handle local downloading of mailbox, filters, folders and multiple accounts. It can be integrated with the GnuPG encryption system installing a plugin extension called Enigmail.
Also included is GPA the GNU Privacy Assistant which will help you in the task of generating your encryption keys and handling the collection of your friends keys into a local keyring.