Basically, you can use any email clients you have in your computer, cellphones, smartphones, or any devices that supports POP3, IMAP, and SMTP protocols.
Most common email clients that you can configure with your email accounts are the ff: Thunderbird, IncrediMail, Eudora, Opera, Outlook Express, Outlook 2000, Outlook 2003, Pegasus, FoxMail, Netscape.
A flash tutorial showing step by step guide on how to set up popular email clients can be found here.