To add another server click the Mail box number and input all the information you need. You will also notice that you can add news group service, too. It is possible to send stored messages in the Outbox during HotSync process. But you need some tricks to work around this matter if you use a server which requires authentication. This makes difficult to sending messages during HotSyn process.
Details are here .
These are the screens when you add a POP server on your setting. Here you have a choice of if you leave the message on the server or bring it to your PDA and delete them from the server. Leaving message on servers would be recommended because next time you might sync the server through a desk top computer. This prevents from scattering important emails everywhere. But be careful because once you download messages in the inbox by using POP3 protocol, all the messages will be regarded the ones you already read even if you leave messages on the server.