How to delete a mailing list?
There are two ways you can delete a mailing list:
Right-click on the name of the mailing list, and from the context menu, choose the “Delete” option
Click on the icon in the “Delete” column.
Both actions will result in a new pop-up opening, from where you can decide weather to delete the mailing list or not. To delete it, press “OK” or press “Cancel” to keep this mailing list.