First Bring up Pegasus Mail. On the top of the screen you should see the heading "Tools". Click on "Tools" and select "Options".

In options on the left side under "Categories" click on "General settings".
On the right side under "Properties", enter you name in the "Personal Name" box .
Next enter your full e-mail address under "Default reply to address".

In options on the left side under categories click on "Network configuration".
On the right side under "Properties", enter the following:
POP3 host "mail.cnsp.com"
Username "your username (the login you chose)"
Password "your password"
SMTP host "mail.cnsp.com"
Next click on the "Advanced configuration options" button.

Under the "Outgoing (SMTP) mail" box, you need to enter your complete e-mail address.
Now click "OK" until you are back to the Pegasus Mail program's startup window and you are ready to send and receive e-mail!