Both of these lists can be for physical distribution such as by the postal service, or can be for electronic distribution. The mailing list originally was for paper mail, but now includes electronic. It is to a list of people that may be interested in the product, service or community issues for example, and want to be informed It becomes a distribution list when those on the mailing list ask for specific things, or are members for example. The mailing list may receive general information to keep people informed, whereas the distribution list distributes to specific named people a specific category of item of information. Not everyone will ask for the Newsletter or sales promotions to be distributed to them. Distribution lists involve people giving permission to receive, or the sender allows the distribution to those people specifically and not others.