You may be unable to find the Mailing List feature on your Control Panel. That is because within an exchange environment it is known as a distribution list. The following guide will guide you through creating a distribution list, which has the same function as a mailing list.
Create the list
First log in to your Control Panel at http://manage.myhosting.com and select your subscription on the upper right drop-down list.
Now, click on the black Exchange Email tab up top. Once you are there you will see the following sub-tabs; you should click on the Distribution Lists tab.
Once you click on the Distribution Lists tab, you will see the following screen. Click on the Add New Distribution List, which will open up a wizard.
Most of the information is self-explanatory, but you may not be familiar with the Security option. There you will choose who can send a message to the list you are creating. This is mostly used to manage spam.
Once you have created the list, you will need to add members to it. These are the individuals that will receive a copy of the message that is sent to the list. To do this, click the link name of the list you just created. You will be presented with the following Tabs for the list:
Click the Members button to start adding them.
You will see a list of accounts that are created on our system. If you need to add an external address click on the Contacts sub-tab up top, then click on Add New Contact. Add the external email address here so that it will be available in the distribution list as a member.
Now that you have your distribution list created, you can test it by sending a message to the list and checking to see if all the members have received it.