Two women who met online have published PostMarked, a stylized photo messaging app that lets app users create and send cards via text message, email, Facebook, Twitter, and more. Anahelena Natera and Maggie Sheldon, the app creators and partners at Zen Labs LLC, met through a kid's app community where they helped cross promote each other's apps. Now two years and forty-one TestFlight builds later, PostMarked is available for purchase in the App Store.