What is the pop3 in email,they are asking me to fill it in the incoming and the outgoing mail?

what is pop3 and http? in email

What is the pop3 in email,they are asking me to fill it in the incoming and the outgoing mail?
It depend on what server your using for yahoo it's:


* Incoming Mail Server (POP3): plus.pop.mail.yahoo.com


Use SSL, port: 995


* Outgoing Mail Server (SMTP): plus.smtp.mail.yahoo.com


Use SSL, port: 465, use authentication


Click this link for yahoo mail pop3 settings


http://help.yahoo.com/l/us/yahoo/mail/cl...