Name: Your Name (What ever you want)
Email: Your email address is your username
Password: Your t-com.st account password
Description:
Click Next Button
Hostname: pop.t-com.st
Username: Your email address is your username
Password: Your t-com.st account password
Hostname: mail.t-com.st
Username: Your email address is your username
Password: Your t-com.st account password
Click Save Button
Use SSL: None
Authentication: Password
Server Port: 110
Use SSL: None
Authentication: Password
Server Port: 25
You can login t-com.st and Signup for t-com.st new account on your iPhone from here.