Function Of  E-Mail Systems :

Typically e-mail systems support five basic function namely.

  • Composition : Process of creating messages and answers.
  • Transfer : Process of moving message from the originator to the recipient.
  • Reporting : Process of telling the originator whether the message has been delivered or rejected or lost.
  • Displaying : The process of representing the incoming message so that people can read this mail.
  • Disposition: Concerned with what the recipient does with the message after receiving it.

Structure Of E-Mail :

E-mail has the distinction between envelope and its contents.

Envelope :

Envelope encapsulates the message containing all the information needed for transporting the message such as destination address priority, security level.

Message Or Content:

The message include the envelope consists of two parts

  • header : information for user agents.
  • body : information for human recipient.