Billions of email messages are sent every day, and you might have sent a few yourself. Have you ever wondered what happens to an email message after you press the send button? Email is nothing but millions of little text files. Even if it has attachments, everything is converted to text. There are millions of email servers across the web, each one having a set of text files for all the email accounts, one for each person. When you click the send button, here's what happens: the domain name is stripped off and then that email server is contacted. Your email is added to the end of the appropriate text file. When someone goes to check email, the email program copies the file, and the server file is cleared. That sounds incredibly simple, but what's amazing is that it really is that simple. So, that's how email works. I'm Marshall Brain, and that's how stuff works.