Annie Proulx’s first novel Postcards is a saga of the disintegration of a rural New England family, whichis so realistically rendered that any connection with Jacques Derrida’s philosophical theory of the post in The Post Card seems unlikely to exist. At the same time, it is evident that the novel is committed to the quiddity of the postcard as a medium that is simultaneously postal and postmodern. Through the clever use of graphically presented patchwork postcards, the novel epitomizes the economical and cultural transfiguration of the twentieth century America. In Derrida’s postal theory, the postcard marks the end of the age of the postal system that transmits documents. This paper argues that what the postcards in the eponymous novel want to say is how Derridian “postcardization” corresponds to postmodernization at the most basic and personal level. The condition of Postcards may not be manifestly postcolonial, and the epistolary space is only partial, but the idea of the postmodern postal principle prevails in the novel, which registers the diasporic flux of people, place, and time with no destination whatsoever.