On Microsoft Outlook
Click on 'Tools' > Accounting settings > 'New' tab.
Leave default on 'Microsoft Exchange, POP3, IMAP, or HTTP'
Your name: John
email address: John@domain.com
password: 123456 [should be same a webmail]
select: 'Manually configure server...'
Account type: POP3
Incoming mail server: mail.domain.com
Outgoing mail server (SMTP): mail.domain.com
Username: [same as webmail]
password: same as webmail
Click next to complete setup
POP3 Port: 110
SMTP Port: 587
How make to a copy of email from my different email address in one email box
You need to go to the user's mail, in the right top corner click on 'Webmail Home', in the Manage Your Inbox section, select 'Forwarder' and add your main email address in order to receive a copy of a each mail sent tp user's mail address. Click 'Go' to save.