You are able to tell who sent the message , what their Internet address is, the date and time that the message was sent, who the message was sent to and the subject of the message. The second part is the body of the message. Some messages have a third part called the signature. This non-essential part of the message is created ahead of time by the sender of the message. It usually includes the person's name, preferred e-mail address, mail address, and voice phone number.
Some people get fancy and have a quote or a picture created with lines and dashes.
It is important to copy the network addresses exactly. If even one character is wrong, your e-mail will be bounced right back to you unsent. DO NOT type your messages in all capital letters. That is the equivalent of shouting at someone. When answering e-mail, you should incorporate any questions asked in your reply.