明信片可以作为艺术媒介表达政治，革命等立场，艺术家也被鼓励设计明信片。与传统的艺术作品不同，明信片只需要有一个印章就可以传播，从邮寄到收到，我们的生活已经习惯了明信片的传播。

The accessibility and familiarity of a postcard makes it an artistic medium rich with potential for subversion, appropriation or manipulation for political, satirical, revolutionary or playful intent. The inexpensiveness of production encourages artists to experiment with their design; the only artistic restriction: that it fits through a letterbox. Unlike traditional works of art, the postcard requires nothing more than a stamp for it to be seen on the other side of the world. Made of commonplace material, postcards invite handling, asking to be picked up, turned over, and shown to friends – to be included in our lives.