Click Tools
Click Accounts
Click Mail
Click Add
Fill in your name in display name box (Ex. : Gittoe Piero)
Choose I already have an email address that I’d like to use
Fill in your email address in E-mail Address box ( Ex. : gopiero@rad.net.id )
Click Next
Fill in pop.rad.net.id in Incoming Mail box
Fill in smtp.rad.net.id in Outgoing Mail box
Click Next
Yourmail will appear in the Account name box
Fill in your email password (optional)
Click remember password (optional)
Click Next
Click Finish