Thought I would provide these settings for everyone else. Yes Yahoo! BizMail is a POP3 account but you can use IMAP settings to make the syncing between devices work.
Incoming: imap.mail.yahoo.com
Outgoing: smtp.bizmail.yahoo.com (use only this server)
Port: 993 SSL ON
So far I have this working between an iPhone 4S and MacBook Air and MacBook Pro.
I'm removing the MacBook Pro today and adding the iMac. Crossing fingers - so far everything works seamlessly.
Incoming: imap.mail.yahoo.com
Outgoing: smtp.bizmail.yahoo.com (use only this server)
Port: 993 SSL ON
So far I have this working between an iPhone 4S and MacBook Air and MacBook Pro.
I'm removing the MacBook Pro today and adding the iMac. Crossing fingers - so far everything works seamlessly.