Mailing groups represent different mailing lists within a single project. Every mailing project may contain multiple mailing groups used for different purposes. Each mailing group specifies its own sender information such as From Name, From Address and Reply To Address. It may contain any number of recipients for a certain purpose. The same recipient can participate in several mailing groups at the same time as a subscriber. Mailing groups can be excluded from sending temporary of permanently by using the check boxes located next to group names.