Within your control panel you can:
When you create e-mail accounts for users, you create e-mail
boxes, which will be accessible via POP3 or IMAP protocols. Mailbox
creation is as easy as typing in a name and password. Click the
Mail icon at the Domain
administration page to access the Mail Names Management functions:

From this page, you can enable/disable the mail service for the
domain. To this effect, click the
Enable or
Disable icon respectively.
You can allow/disallow access from the control panel to web-based mail interface (Webmail), and specify the settings for handling incoming mail addressed to the users not existing at this domain:
Preferences
To create a new mail name, follow these steps:
Add New
Mail Name. The mail name creation page will open:
After the mail name is created, it appears on the Mail Names list, accompanied by seven icons:
indicates
whether mail user is allowed to access the control panel for
managing his/her account,
represents a
mailbox,
represents a mail
redirect
represents a
mail group
represents a mail
auto responder
represents spam
filtering
represents antivirus
filteringThese icons are displayed in grey when the corresponding services are not active, and appear in colour when active. To edit mail name account settings select a mail name or click on an icon corresponding to the service you wish to configure.
To switch to displaying the mail aliases for the mail names in the list, click the Show Aliases button, to hide them use the Hide Aliases button.
To remove one or several mail names, check the checkboxes in the mail names list, corresponding to the mail names you wish to remove and click Remove Selected.