IMAP allows 2-way synching, which means everything you do remotely also affects your Verizon Yahoo Mail account.
Incoming Mail (IMAP) Server
- Server – imap.mail.yahoo.com
- Port – 993
- Requires SSL – Yes
Outgoing Mail (SMTP) Server
- Server – smtp.mail.yahoo.com
- Port – 465 or 587
- Requires SSL – Yes
- Requires authentication – Yes
Your login info
- Email address – Your full email address (name@example.com)
- Password – Your account’s password
- Requires authentication – Yes
More info here at Verizon’s site