Email Settings for One.com
Access your One.com account from your macOS or Windows email client.
Email Settings for One.com
Incoming Server - IMAP
Server: imap.one.com
Port: 993
Security: SSL/TLS
Username: Your full email address
Password: Your password
Outgoing Server - SMTP
Server: send.one.com
Port: 465
Security: SSL/TLS
Username: Your full email address
Password: Your password