> Yahoo! operates IMAP and secure IMAP servers (imap.mail.yahoo.com in particular), which are globally accessible.
I did verify that IMAP4 is now available from Yahoo. This is the setting for a Yahoo Mail Plus account (i.e. not one of the free Yahoo accounts) that I am using and they work for me. This may of may not be the same for your commercial account nor for the free Yahoo accounts.
(a) -POP3-
Server host name: pop.mail.yahoo.com
User name: <your_user_name>@yahoo.com
Password: <your_password>
Server TCP/IP port: 995
SSL/TLS: via direct SSL connect
Enable server certificate fingerprint tracking: unchecked
(b) -SMTP STARTTLS -
Server host name: smtp.mail.yahoo.com
Server TCP/IP port: 587
SSL/TLS: via STARTTLS
Enable server certificate fingerprint tracking: unchecked
SMTP Authentication: Login to the SMTP server using POP3
username/password (the Yahoo-POP3-definition has been chosen)
(c) - SMTP via SSL -
Server host name: smtp.mail.yahoo.com
Server TCP/IP port: 465
SSL/TLS: via direct ssl connection
Enable server certificate fingerprint tracking: unchecked
SMTP Authentication: Login to the SMTP server using POP3
username/password (the Yahoo-POP3-definition has been chosen)
(d) - IMAP4 via SSL -
Server host name: imap.mail.yahoo.com
User name: <your_user_name>@yahoo.com
Password: <your_password>
Server TCP/IP port: 993
SSL/TLS: via direct SSL connect
http://help.yahoo.com/l/us/yahoo/mail/classic/mailplus/pop/pop-14.html