Yahoo! Plus mail is similar to Yahoo! providing all the same services and features. But the main difference between is that with Yahoo Plus Mail, you won’t have those irritating and annoying ads popping on your screen everywhere.
Yahoo Plus SMTP Settings
Server Address: plus.smtp.mail.yahoo.com
Username: Your Yahoo! Mail user name
Password: Your Yahoo! Mail Password
Port Number: 465
Sending Limits: 500 Emails a day or Emails to 100 connections a day.