/* TEAM */ Founder & product: Justin Winter Engineering pair: Claude (Anthropic) — yes, really; the MCP endpoint is not a gimmick, an AI helped build the service AI agents use. Printing & mailing: a commercial print network + the United States Postal Service, who do the part that involves actual trucks. /* THANKS */ Every letter carrier who has ever walked a route in the rain. The USPS Publication 28 addressing standard, an underrated classic. /* SITE */ Stack: Next.js, Tailwind CSS, Stripe, hosted at the edge. Fonts: Bricolage Grotesque, Manrope, IBM Plex Mono. Standards: text/plain enjoyers — see /llms.txt, /lawyers.txt, /.well-known/security.txt Last major update: July 2026 /* COLOPHON */ paperplane exists because mailing one letter should not require a printer, a stamp drawer, or a trip across town. Type it, we mail it. Say hi: help@sendpaperplane.com