Another 100,000 were sent via bangtails—offers on extra flaps attached to Fingerhut monthly remittance envelopes—in early November. (Target Marketing)

A bangtail envelope is usually a business reply envelope with an extra flap designed so users can tear off the flap, fill in the important information, and insert the “tail" back into the envelope. The remaining long flap completely covers the back of the envelope so additional information can be filled in under the flap and the envelope’s back. (Premier Envelope)

Referring now to the actual formation of the mailer Mb, lines of perforations are formed at 6b, 8b and 9b to define the payment coupon portion of panel 13b and the bangtail panel 17b. The web is then printed with both the non-personalized generic and personalized intelligent information on one or both sides and in various portions of the mailer panels by the print machines 30b and 32b illustrated in FIG. 19. (Free Patents Online)