MO POP3
From SMS Wiki
To receive your messages via POP3, connect your application using the following settings:
- Host: pop3.upsidewireless.com
- Username: {your account username}
- Password: {your account password}
In general, receiving messages via POP3 is best suited whenever Humans will be reading the messages using a mail reader application. If you develop an application that needs to respond to incoming messages, the HTTP interface is recommended over POP3.
POP3 message access is similar to email forwarding in many respects.
Below are external resources (.NET) which will help you in coding your application to use POP3 method for collecting MO messages
http://www.codeproject.com/KB/IP/Pop3MailClient.aspx
http://www.codeproject.com/KB/IP/NetPopMimeClient.aspx