Create Mailing List – Client Area

You can log in to Your Client Area by going to this link.
Once you have logged into your Client Area click the Services green button.

In the My Products & Services table, find your hosting service and click the Manage button.

Scroll down the page until the Manage Account title, then choose the Mailing Lists button.

Click the button + Create Mailing List.

List Name
Type the mailing list name that you want.
The mailing list name must only contain letters, numbers, underscore characters (_), periods (.), or dash characters (-). You cannot use spaces.
Domain
Select the domain for the mailing list.
Password
Enter a secure password in the Password text box.
Password must have at least 8 characters, must contain at least three character categories among the following:
Uppercase characters (A-Z),
Lowercase characters (a-z),
Digits (0-9),
Special characters (~!@#$%^&*_-+=`|(){}[]:;”‘<>,.?/).
The system will evaluate the password that you enter on a scale of 100. A weak password has 0 value, while a very secure password has 100 value. Or you can click Generate to let the system create a secure password for you. 
Access Type
Choose between Public and Private Access Type.
Public
Public archives exist for this mailing list.
The subscriptions are open and the Mailman interface displays the list.
Private
Private archives exist for this mailing list.
The administrator must approve subscriptions,
and the Mailman interface does not display the mailing list.

Usually mailing lists are private, not public.

Click on Create button.