A small slip of paper (3 1/2 x 8 1/2 inches) that fits into the direct mail package and dramatically illustrates some particular feature of the offer, such as a free gift for ordering before a certain deadline.

A buckslip is a small insert added to a mailing package; it is usually about the size of a dollar bill. Buckslips are an easy way to add information that supports the primary purpose of the mailing (such as an incentive for early replies known as an “early bird” offer) or that supports a secondary purpose (such as an advertisement for another product that can be used in conjunction with the primary product being sold, e.g., golf clubs and club covers). Buckslips can be created at much less cost than other package components and can serve as a last-minute addition if new or different information must be provided.