l use gmail and yahoo as my mail provider here is my settings for pop on my tablet free yahoomail.
username@yahoo.co.uk
username
password

incoming ; pop.mail.yahoo.co.uk
out going ; smtp.mail.yahoo.co.uk
port for pop 110
outgoing SSL port 465
i send and recieve my mails allright no problems so far,
this settings were done with the account settings wizard.