For a mobile operator company, it is always provided a mail account with mobilephonenumber@operatorname.com, for subscriber receive mail. When you send mail to this account, operator will forward this mail to its phone number via based on phonenumber and using GSM short message protocol.

As support operator, I need to code a POP3-like program to read all incoming mail without input all username and password infromation. How do you do it?