Mailing List Services An electronic mailing list allows a business to communicate with its established clients as well as to establish new contacts. Email mailing lists can operate like the familiar postal mailing list except that more opportunity for automation can reduce the costs of maintaining and administering a list. Mailing lists can be customized in several ways. They can operate like an informal discussion group with contributions coming from any member of the group or they can operate like a more formal newsletter distributed from a company to its subscribers. A consultation with Bena can help identify the ways in which mailing list services can best be tailored to an individual firm's specific requirements.