Question: what are yahoo imap settings?
Answer: Yahoo Mail IMAP server: imap.mail.yahoo.com.
IMAP port: 993.
IMAP TLS/SSL: yes.
IMAP username: Your full Yahoo Mail address.
IMAP password: Your Yahoo Mail password or app password.
Yahoo Mail SMTP server: smtp.mail.yahoo.com.
SMTP port: 465 (try 587 as an alternative)