A look at Paperless Post, a New York-based software company for sending online invitations and events that launched in 2009 and has sent ~650M invitations (Christopher Barnard/New York Times)

Christopher Barnard / New York Times:
A look at Paperless Post, a New York-based software company for sending online invitations and events that launched in 2009 and has sent ~650M invitations  —  James Hirschfeld and his sister, Alexa Hirschfeld, at the Paperless Post office in Manhattan's Financial District.Jonah Rosenberg for The New York Times