Name: Your Name (Whatever you want)
Email: Your username
Password: Your core.com account password
Description:
Click Next Button
Hostname: mail.core.com
Username: Your username
Password: Your core.com account password
Hostname: authmail.core.com
Username: xxxx@core.com
Password: Your core.com account password
Click Save Button
Use SSL: Yes
Authentication: Password
Server Port: 995
Use SSL: None
Authentication: Password
Server Port: 25