A Comparative Study of the Security Level among Different Kinds of E-mail Services – Pilot Study

The e-mail service has become widely accepted and is being frequently used for both business and private communication. It represents a fast and convenient communication method which is at the same time disturbance-free for the recipient (the recipient autonomously chooses the moment when he will read the email and answer it). In business environments the use of email increases productivity and also reduces the communication costs. The use of e-mail for private communication is also much faster and more comfortable than the conventional mail service. The e-mail service should comply with some basic security premises in order to satisfy the user's needs and requirements. It has to satisfy some basic security premises, such as [1]: authenticity confidentiality integrity non-repudiation