International conservation presents a unique challenge for American conservation agencies, demanding unique policy tools. To encourage American citizens to support overseas conservation, the Fish and Wildlife Service, the United States Postal Service, and environmental non-governmental organizations collaborated to create the Save Vanishing Species Stamp, a semipostal stamp featuring a tiger. In doing this, these actors relied on the flagship species approach, wherein a charismatic species attracts attention and support for ecological protection. The “Tiger Stamp” has been on sale since 2011, but its effectiveness as a policy tool is uncertain. In this paper, we discuss the Tiger Stamp and analyze its effectiveness from several angles. The stamp’s impact on species conservation is uncertain and its sales have been lower than those of past semipostal stamps, but this should be understood in the context of nationwide decline in traditional postal activities and the hortatory effect of the stamp beyond its economic effects. We conclude that the stamp is, on balance, a valuable policy tool, and should be continued.