I was this article about how email communication is treat by law.
1. First, an individual authorized to use the system logs on to the system to send a message. After a message is sent, the system stores the message in temporary or intermediate storage. I will refer to this storage as "intermediate storage".
2. After a message is sent, the system also stores a copy of the message in a separate storage for back-up protection, in the event that the system crashes before transmission is completed. I will refer to this storage as "back-up protection storage". In the course of a transmission from the sender to the recipient, a message passes through both intermediate and back-up protection storage.
Transmission is completed when the recipient logs on to the system and retrieves the message from intermediate storage. After the message is retrieved by the intended recipient, the message is copied to a third type of storage, which I will call "post-transmission storage". A message may remain in post-transmission storage for several years.
By reading this article came to know that email can be retrieve after the user user read it, but can not retrieve by third party prior to person who is owner of that email.
But i am confused: Could please help me to understand what "intermediate storage" and "Back-up protection" and "psot-transmission" is this all stuffs includes in all kind of emails or jst special one?