2. Log into your Email Admin area and click on the domain you wish to add a mailbox to.
3. Click on “Add Mailbox”.
4. In the Create a new mailbox screen enter the name for your mailbox (e.g. in this case firstname.lastname@example.org). Then type in a password for the mailbox twice. Type in a descriptive name for the namebox and finally select the amount of quota you wish to allocate from the maximum you set on the domain earlier. The number shown will normally be the amount currently unallocated on the domain. Click on “Add Mailbox” when done.
You can also create email aliases and email forwards.