The Email Manager permits the administrator to manage the Email addresses used in the selected domain.  The Email Manager provides two screens, the first of which permits the user to select the domain name to use for all of the various email addresses needed for the domain.

After selecting the domain, the administrator is presented with the option of Adding Pop Accounts (accounts that can access Email, but that do not have server access), Alias Addresses (an email alias can be used to redirect email to an authorized user or another Pop Account), Autoresponder, and Mailing Lists.

Here is the Email Manager page for the selected domain. 

Updates to the Email Editor will be reflected to the connected servers within 5 minutes.