Email Server Settings

IMAP

Server: mail.yourdomain (e.g. mail.bestcompany.co.uk)
Username: Your email address
Password: Your password
Port: 143
SSL/TLS: STARTTLS

POP3 (Not Recommended)

Server: mail.yourdomain (e.g. mail.bestcompany.co.uk)
Username: Your email address
Password: Your password
Port: 110
SSL/TLS: STARTTLS

SMTP

Server: mail.yourdomain (e.g. mail.bestcompany.co.uk)
Username: Your email address
Password: Your password
Port: 587
SSL/TLS: STARTTLS