Quarterly Co. is a subscription service that allows subscribers to receive themed shipments in the mail from influential contributors of their choice every three months. The shipments each tell a compelling story crafted by the contributor and provide tangible delight to the recipient each time. We designed a unique packaging system based on the rich visual history of the postal service in addition to the brand identity and online presence.

http://www.thedieline.com/blog/2012/12/4/quarterly.html