Negative option: A direct mail buying option in which the donor agrees to receive and pay for products or services at regular intervals (such as receiving a book a month) unless the donor tells the not-for-profit in advance not to ship the product. (See Positive Option, below).
Nixie: A mailing piece returned to the sender by the post office because of an incorrect or undeliverable name or address.
Nth name: The method of testing the pulling power of a list by selecting and mailing to a representative sampling of the list. The list owner or broker selects every 5th name, 20th name or other variable (Nth name) that provides a valid representation.
