Name: Your Name (What ever you want)
Email: Your username
Password: Your nifty.com account password
Description: nifty.com
Click Next Button
Hostname: pop.nifty.com
Username: Your username
Password: Your nifty.com account password
Hostname: smtp.nifty.com
Username: Your username
Password: Your nifty.com account password
Click Save Button
Use SSL: None
Authentication: Password
Server Port: 110
Use SSL: None
Authentication: Password
Server Port: 587
You can login nifty.com and Signup for nifty.com new account on your iPhone from here.