Digital list of e-mail addresses used to deliver particular electronic messages over the World Wide Web. Electronic mailing lists may include a persons name, address, phone number, and other descriptive information. All electronic mailing lists must have e-mail addresses because those addresses are used to deliver the information to each individual. There are companies that specialize in the management of electronic mailing lists. With the services these companies provide, the company or individual delivering messages can manage, view, and make any necessary changes to the list efficiently. A typically mailing list for a company may distribute weekly newsletters or special promotional offers.