Pop setting profimail for yahoo sg:

Fill
1. incoming mail server : pop.mail.yahoo.com.sg
2. outgoing mail server : smtp.mail.yahoo.com.sg

advance setting:
1. secure POP3 login : no
2. SMTP authen : yes
3. SMTP user : no
4. SMTP pass : no
5. POP3 port : 110
6. SMTP port : 25
7. last to : no


GooD luck :)