"My parents love getting postcards of their grandkid."5.0 starson by tomasaurus2
Pros: Easy to use. Good postcard quality.
Cons: I wish I could pay through iTunes.
Summary: I've used Postcardly to send postcards for about a year now. I love the app. It's quick to snap a photo of my kid and send it as a postcard to my parents. They like having something to put on the fridge.