Emailing...How Does It Work?????

http://communication.howstuffworks.com/email2.htm

This will sound very boring, but please read!:

This is a URL that leads to one page on a website called "HowStuffWorks" and has some important information. I's researching on how emailing works. This website is great because it contains oodles of information and a picture that portrays how the process of emailing works, how it's recieved and sent. They introduce servers and protocols. Please, if you have better websites for email information inform me!