To be honest, you guys are better off trying Interpals or something similar. This app is completely anonymous so you have no idea if youre actually talking to someone your age. Also it randomly picks who your post card goes to. I have also gotten some pretty nasty messages on this. One guy kept asking me for inappropriate photos after I had told him no multiple times. And you cant view other cards that people have posted, all you can do is post and wait for a response. This app desperately needs a membership page so you can get people with similar interests and are in the same age range. Finally, be careful when using this!
The real Jashei about DokiDokiPostbox