Cable ONE supports the following protocols for email clients: IMAP, POP3 and SMTP.

IMAP
Server: mail.cableone.net
SSL: true-implicit
Port: 993 (default)
User: user@cableone.net

POP3
Server: mail.cableone.net
SSL: true-implicit
Port: 995 (default)
User: user@cableone.net

SMTP
Server: mail.cableone.net
SSL: true-explicit
Port: 465
User: user@cableone.net