Handling charge — An additional charge tacked onto a sale or rental agreement, to cover shipping and data entry costs. Often added to special list requests.

Hard copy — A printout of data in paper form, or the original printed source data for data entry into electronic form.

Home buyer — Those who have recently purchased homes, usually separated on consumer lists from long-term home owners.

Hot line — The "hottest" leads on a list, usually those who have recently made a purchase by mail.

House lists — Lists that are created and maintained in-house, from white mail, subscribers or buyers, etc.

Households — Homes, as opposed to non-households (offices, schools and government addresses, for example).