I followed already 3 tutorials from this site, escpecially the virtual users with postfix, courier, but none examplain how to read emails. And also, I think those tutorials are incomplete, as it doesn`t tell how to create the maildir, what permissions to set and so on.
Use an email client such as Thunderbird or Outlook for it. Create an account in it and fill in your server name or IP address, the user name, and the password. Don't forget to enable "Server requires authentication".
