Abstract: A direct-mail advertising package includes an acceptance form and a return mailer envelope. The acceptance form and envelope are disposed between a front and back cover, each of which may bear a promotional message. The respective peripheral edges of the package (or other peripherally-disposed portions of the package) are glued together, preferably intermittently, so that the integrity of the package may be maintained during mailing. The front and back covers are integrally joined to form a spine alongside an edge of the package, and recessed index tabs are formed on the package opposite to the spine, so that the package may be "popped" open against its adhesive retention.The acceptance form is perforated, and when torn away from the package, has outer dimensions which are less than the corresponding inside dimensions of the envelope; thus the acceptance form may be slipped easily into the envelope without folding the acceptance form. If desired, the acceptance form is made from a relatively-thin paper stock.